Presentations at Conferences and Workshops

1. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in (N+1) Dimensions, Joint Meeting of the American Mathematical Society and the New Zealand Mathematical Society, Victoria University of Wellington, Wellington, New Zealand, December 13, 2007.
2. Talk: W. Hereman and W. Malfliet, The tanh method: A tool to solve nonlinear partial differential equations with symbolic software, Proceedings 9th World Multiconference on Systemics, Cybernetics, and Informatics, Orlando, Florida, July 10-13, 2005 [Paper presented by W. Malfliet].
3. Talk and software demonstration: Ü Göktas and W. Hereman, Special solutions of nonlinear PDEs (presentation in Mathematica notebook format) , Wolfram Technology Conference 2004, Wolfram Research, Inc., Urbana-Champaign, Illinois, October 23, 2004 [Paper presented by Ü Göktas].
4. Poster: Symbolic computation of conserved densities for nonlinear evolution and lattice equations, Los Alamos Days, University of Colorado, Boulder, Colorado, April 30-May 2, 1998.
5. Talk: W. Hereman and Ü Göktas, Symbolic computation of conservation laws for nonlinear PDEs and differential-difference equations, Session: Algorithmic Methods for PDEs, Third International IMACS Conference on Applications of Computer Algebra (IMACS-ACA'97), Aston Wailea Resort, Maui, Hawaii, July 24-26, 1997. [Paper presented by Ü Göktas].
6. Poster: W. Hereman and Ü Göktas, Symbolic computation of conservation laws for nonlinear PDEs and differential-difference equations, 17th Annual International Conference on "Nonlinear Waves and Solitons in Physical Systems", Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico, May 12-16, 1997. [Paper presented by Ü Göktas].
7. Poster: W. Hereman and Ü Göktas, Symbolic computation of conservation laws for nonlinear PDEs and differential-difference equations, Fourth East coast computer algebra day, Northeastern University, Boston, Massachusetts, May 3, 1997. [Poster presented by Ü Göktas].
8. Poster: Symbolic software for Lie symmetry computations, Workshop on "Symmetry and Integrability of Difference Equations", Center de Recherches Mathématiques, Université de Montréal; Estérel, Québec, Canada, May 22-29, 1994.
9. Talk: Symbolic software for soliton theory, Los Alamos Days, University of Colorado, Boulder, Colorado, April 24-25, 1992.
10. Talk: Symbolic software for nonlinear partial differential equations: symmetries, integrability, and exact solutions, 1992 AMS-SIAM Summer Seminar in Applied Mathematics, Colorado State University, Fort Collins, Colorado, July 26-August 1, 1992.
11. Talk: A. Grundland and W. Hereman, Lie point symmetries of classical field theories, XIX International Colloquium on Group Theoretical Methods in Physics, Salamanca, Spain, June 29-July 4, 1992 [Paper presented by A. Grundland].
12. Talk: Solitary wave solutions of nonlinear PDEs using a direct method and MACSYMA, ICIAM 91: Second International Conference on Industrial and Applied Mathematics, Washington, D.C., July 8-12, 1991.
13. Talk: W. Hereman, A Macsyma program for the Hirota method, 13th IMACS World Congress, Trinity College, Dublin, Ireland, July 22-26, 1991 [Paper presented by L. Fishman].
14. Talk: Applications of symbolic manipulation program to nonlinear PDEs in soliton theory, Front Range Scientific Computation Circus, Department of Mathematics, University of Colorado, Denver, Colorado, November 2, 1990.
15. Talk: Solitary wave solutions of nonlinear PDEs using MACSYMA, SIAM Annual Meeting, Chicago, Illinois, July 15-20, 1990.
16. Poster: MACSYMA programs for PDEs and ODEs: the Painlevé test and Lie symmetry program, Los Alamos Days, University of Colorado, Boulder, Colorado, April 12-14, 1990.
17. Talk and software demonstration: MACSYMA: a guide for the perplexed, Annual Spring Meeting of the Mathematical Association of America, Rocky Mountain Section, Laramie, Wyoming, April 6-7, 1990.
18. Talk and software demonstration: MACSYMA program for the Painlevé test of non linear ordinary and partial differential equations, Workshop on Symbolic Computation Methods in Differential Equations, Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, Minnesota, June 26-30, 1989.
19. Talk and software demonstration: MACSYMA program for the calculation of the symmetry group of differential equations, Workshop on Symbolic Computation Methods in Differential Equations, Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, Minnesota, June 26-30, 1989.
20. Poster: MACSYMA program for the Painlevé test of non-linear ordinary and partial differential equations, NATO School on Partially Integrable Nonlinear Evolution Equations and their Physical Applications, Centre de Physique des Houches, Ecole de Physique Théorique, Les Houches, France, March 21-30, 1989.
21. Talk: Derivation of the Dym equation and its implicit solitary wave solution, Workshop on Solitons in Nonlinear Optics and Plasma Physics, Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, Minnesota, November 7-11, 1988.
22. Talk: MACSYMA program for the Painlevé test of nonlinear ordinary and partial differential equations, (with demonstration), SIAM Annual Meeting, Minneapolis, Minnesota, July 11-15, 1988.
23. Talk: Painlevé analysis, integrability, and particular solutions to fifth-order dispersive evolution equations, SIAM Annual Meeting, Minneapolis, Minnesota, July 11-15, 1988.
24. Poster: Non integrability of multiple wave interactions, SIAM Annual Meeting and 35th Anniversary, Denver, Colorado, October 12-15, 1987.
25. Talk: Nonlinear mode decoupling for classes of evolution equations, Workshop III on (nonlinear) Stability in Magneto-hydro-dynamics, University of Antwerp, Antwerp, Belgium, August 26-September 24, 1981.
26. Talk: Niet-resonante golfinterakties voor klassen van evolutie vergelijkingen, Non-resonant wave interactions for classes of evolution equations, Inter-university Postdoctoral Symposium on Field Theory and Statistical Mechanics, Ovifat, Belgium, October 24-25, 1980.

Invited Seminars and Colloquia at Other Universities and Laboratories

1. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in (N+1)-dimensions, Department of Mathematical and Statistical Sciences, University of Kwa-Zulu Natal, Durban, South Africa, April 7, 2008.
2. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs, Department of Mathematics and Statistics, La Trobe University, Melbourne, Australia, November 29, 2007.
3. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in (n+1)-dimensions, Department of Mathematics and Statistics, University of Canterbury, Christchurch, New Zealand, October 25, 2007.
4. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in multi-dimensions, Department of Mathematics and Statistics, University of Otago, Dunedin, New Zealand, September 20, 2007.
5. Talk and software demonstration: Symbolic computation of travelling wave solutions of nonlinear partial differential and differential-difference equations , Centre de Recherches Mathématiques, Université de Montréal, Montréal, Québec, Canada, May 29, 2007.
6. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in multi-dimensions, Computational Mathematics Group, National Center for Atmospheric Research, Boulder, Colorado, April 5, 2007.
7. Talk and software demonstration: Symbolic computation of conservation laws of nonlinear PDEs in multi-dimensions, Centre de Recherches Mathématiques, Université de Montréal, Montréal, Québec, Canada, May 23, 2006.
8. Talk and software demonstration: Continuous and discrete homotopy operators: A theoretical approach made concrete and applicable, Department of Mathematics, Colorado State University, Fort Collins, Colorado, September 29, 2005.
9. Talk and software demonstration: Continuous and discrete homotopy operators: A theoretical approach made concrete and applicable, Department of Computational and Applied Mathematics, Rice University, Houston, Texas, September 19, 2005.
10. Talk and software demonstration: Continuous and discrete homotopy operators: A theoretical approach made concrete, Department of Pure Mathematics and Computer Algebra, University of Ghent, Ghent, Belgium , June 28, 2005.
11. Talk and software demonstration: Symbolic computation of travelling wave solutions of nonlinear partial differential and differential-difference equations Royal Military Academy, Brussels, Belgium, December 23, 2004.
12. Talk and software demonstration: Continuous and discrete homotopy operators with applications in integrability testing of nonlinear PDEs and lattices, Department of Mathematics, La Trobe University, Melbourne, Australia, August 6, 2004.
13. Talks and software demonstrations: Continuous and discrete homotopy operators with applications in integrability testing of nonlinear PDEs and lattices: Parts I and II, Department of Mathematics and Statistics, University of Canterbury, Christchurch, New Zealand, July 27 and August 3, 2004.
14. Talk and software demonstration: Continuous and discrete homotopy operators with applications in integrability testing of nonlinear PDEs and lattices, Institute of Fundamental Sciences, Massey University, Palmerston North, New Zealand, July 9, 2004.
15. Talk and software demonstration: Symbolic computation of travelling wave solutions of nonlinear differential-difference equations, Physics Department, University of Antwerp, Antwerp, Belgium, December 23, 2003.
16. Talk and software demonstration: Continuous and discrete homotopy operators with applications in integrability testing of nonlinear PDEs and lattices, Department of Computer Sciences, Catholic University of Leuven, Leuven, Belgium, December 19, 2003.
17. Talk and software demonstration: Continuous and discrete homotopy operators with applications in integrability testing, Centre de Recherches Mathématiques, Université de Montréal, Montréal, Québec, Canada, December 4, 2003.
18. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear differential-difference equations, Physics Department, University of Antwerp, Antwerp, Belgium, July 1, 2003.
19. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear differential-difference equations, Department of Theoretical Physics (TENA), Free University of Brussels, Brussels, Belgium, June 19, 2003.
20. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Mathematics, Colorado State University, Fort Collins, Colorado, April 17, 2003.
21. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations. Department of Mathematical Physics and Astronomy, University of Ghent, Ghent, Belgium, December 23, 2002.
22. Talk and software demonstration: Symbolic computation of travelling wave solutions of nonlinear PDEs and lattices with Mathematica, Physics Department, University of Antwerp, Antwerp, Belgium, December 19, 2002.
23. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations. Department of Mathematics, University of Colorado, Colorado Springs, Colorado, September 26, 2002.
24. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Applied Mathematics, University of Colorado, Boulder, Colorado, February 28, 2002.
25. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Mathematics and Applied Mathematics, University of Cape Town, Cape Town, South Africa, June 8, 2001.
26. Talk and software demontration: Symbolic computation of conserved densities and generalized symmetries of nonlinear evolution and lattice equations, Joint Colloquium Department of Mathematics and Department of Applied Mathematics, University of Stellenbosch, Stellenbosch, South-Africa, May 29, 2001.
27. Talk and software demonstration: Solving nonlinear wave equations and lattices with Mathematica, Department of Mathematics and Applied Mathematics, University of the Free State, Bloemfontein, South Africa, May 23, 2001.
28. Talk and software demonstration: Solving nonlinear wave equations and lattices with Mathematica, School of Mathematics, University of the Witwatersrand, Johannesburg, South Africa, May 22, 2001.
29. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Center for Differential Equations, Continuum Mechanics and Applications, School of Computational and Applied Mathematics, University of the Witwatersrand, Johannesburg, South Africa, May 21, 2001.
30. Talk and software demonstration: Solving nonlinear wave equations and lattices with Mathematica , Department of Mathematical and Statistical Sciences, University of Natal, Durban, South Africa, April 20, 2001.
31. Talk: Solving nonlinear wave equations and lattices with Mathematica, Department of Applied Mathematics, University of Stellenbosch, Stellenbosch, South Africa, February 21, 2001.
32. Lecture series: Lecture on wavelets: Theory and applications (10 lectures), Ph.D. Program DOCOP, Department of Physics, University of Antwerp, Antwerp, Belgium, December 4-22, 2000.
33. Talk and software demonstration: Solving nonlinear wave equations with Mathematica, Department of Physics, University of Antwerp, Antwerp, Belgium, December 19, 2000.
34. Talk: Symbolic computation of conserved densities and generalized symmetries for nonlinear evolution and lattice equations, Department of Mathematics, University of New Mexico, Albuquerque, New Mexico, October 17, 2000.
35. Talk: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Applied Mathematics, University of Colorado, Boulder, Colorado, October 21, 1999.
36. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, September 24, 1999.
37. Talk and software demonstration: Symbolic computation of conserved densities, generalized symmetries, and recursion operators for nonlinear evolution and lattice equations, Department of Mathematics, University of Colorado, Colorado Springs, Colorado, September 23, 1999.
38. Talk: J. DeSanto, W. Hereman, and M. Misra, Application of wavelet transforms in rough surface scattering, Sandia Laboratories, Albuquerque, New Mexico, December 10, 1998.
39. Talk: Symbolic computation of conserved densities of nonlinear evolution equations and differential-difference equations, Centre de Recherches Mathématiques, Université de Montréal, Montréal, Québec, Canada, May 23, 1997.
40. Talk: Modified bilinear and Hirota formalism for nonlinear equations, Division of Mathematical Physics and Astronomy, University of Ghent, Ghent, Belgium, April 28, 1995.
41. Talk: Symbolic software for nonlinear partial differential equations, Department of Physics, University of Antwerp, Antwerp, Belgium, April 27, 1995.
42. Talk: Wavelets: An introduction, Department of Physics, University of Antwerp, Antwerp, Belgium, January 11, 1994.
43. Talk: Symbolic programs for the study of nonlinear evolution equations, Department of Theoretical Physics, Free University of Brussels, Brussels, Belgium, December 21, 1993.
44. Talk: Lectures on wavelets (3 lectures), Division of Mathematical Physics and Astronomy, University of Ghent, Ghent, Belgium, November 25, December 2 and 9, 1993.
45. Talk and software demonstration: Symbolic computing in research, National Institute of Standards and Technology (NIST), Boulder, Colorado, March 10, 1992.
46. Talk: Symbolic computations for nonlinear partial differential equations from soliton theory, Departement de Physique, Université du Québec a Trois-Rivieres, Québec, Canada, January 9, 1992.
47. Talk: MACSYMA, exact solutions of nonlinear evolution equations, and solitons, Institute for Theoretical Mechanics, University of Ghent, Ghent, Belgium, December 17, 1991.
48. Talk: The trilateration program, Thunder Basin Coal Company, Wright, Wyoming, June 20, 1991.
49. Talk: Solitary wave solutions of PDEs using MACSYMA, Department of Mathematics, University of Colorado, Boulder, Colorado, October 19, 1989.
50. Talk: Construction of explicit and implicit solitary wave solutions to classes of nonlinear evolution and wave equations, Department of Mathematics, University of Wisconsin at Milwaukee, Milwaukee, Wisconsin, April 14, 1989.
51. Talk: Construction of explicit and implicit solitary wave solutions to classes of nonlinear evolution and wave equations, Department of Mathematics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, March 3, 1989.
52. Talk: Review of methods to construct soliton solutions for nonlinear evolution and wave equations, Centre de Recherches Mathématiques, Université de Montréal, Montréal, Québec, Canada, January 23, 1989.
53. Talk: Derivation of the Dym equation, its implicit solution and its connection with the KdV and MKdV equation, Institute for Theoretical Mechanics, University of Ghent, Ghent, Belgium, January 4, 1989.
54. Talk: Hirota's method versus Painlevé analysis for nonlinear evolution equations, Institute for Theoretical Mechanics, University of Ghent, Ghent, Belgium, May 27, 1988.
55. Talk: The construction of implicit and explicit soliton solutions of nonlinear evolution and wave equations, Department of Electrical Engineering, State University of New York at Binghamton, New York, June 2, 1987.
56. Talk: Exact solitary wave solutions of nonlinear evolution and wave equations using a direct algebraic method, Antwerp Soliton Day, Department of Physics, University of Antwerp, Antwerp, Belgium, June 28, 1985.
57. Talk: Recent developments in the theory of acousto-optics, Department of Electrical and Computer Engineering, Syracuse University, Syracuse, New York, April 26, 1985.
58. Talk: Recent developments in the theory of acousto-optics, Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, April 23, 1985.
59. Talk: A general direct method of constructing solitary waves from linear solutions, Department of Physics, University of Manitoba, Winnipeg, Manitoba, Canada, May 28, 1984.
60. Talk: Diffraction of light by ultrasound, Department of Applied Mathematics, University of Manitoba, Winnipeg, Manitoba, Canada, May 1, 1981.

Graduate Seminars and Colloquia at Local Universities

1. Talk and software demonstration: Continuous and discrete homotopy operators with applications in integrability testing, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, October 31, 2003.
2. Talk and software demonstration: Teaching your computer to do mathematics, Davidson Young Scholars Reunion Gathering, Davidson Institute and Colorado School of Mines, Golden, Colorado, June 21, 2002.
3. Talk and software demonstration: Solving nonlinear PDEs and lattices with Mathematica, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, February 8, 2002.
4. Talk and software demonstration: Symbolic computation of conserved densities and symmetries of nonlinear evolution and differential-difference equations, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, November 25, 1997.
5. Talk: Wavelets: Theory and selected applications, Colloquium Talk, Departments of Physics and Electrical Engineering, University of Alabama, Huntsville, Alabama, March 12, 1996.
6. Talk: Solving PDEs through homogenization, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, February 27, 1996.
7. Talk: Wavelets: Theory and applications -- An introduction, Colloquium Talk, Division of Engineering, Colorado School of Mines, Golden, Colorado, March 21, 1995.
8. Talk: Wavelets: Theory and applications -- An introduction, Computational Modeling Seminar, Division of Engineering, Colorado School of Mines, Golden, Colorado, February 27, 1995.
9. Lecture series: Lectures on wavelets (5 lectures), Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, October 25, November 1, 8, 15, and 22, 1994.
10. Talk: Symbolic computation for investigating nonlinear partial differential equations, Colloquium Series, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, September 16, 1994.
11. Talk: Wavelets: An introduction, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, February 14, 1994.
12. Talk and software demonstration: Symbolic computing in research, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, February 24, 1992.
13. Talk: The bulldozer project, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado. Briefing for Thunder Basin Coal Company, February 1, 1991 and Graduate Seminar, February 4, 1991.
14. Talk: Solitary wave solutions of PDEs using a direct method and MACSYMA, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, October 1, 1990.
15. Talk: Solitary wave solutions of PDEs using a direct method and MACSYMA, Department of Physics, Colorado School of Mines, Golden, Colorado, September 18, 1990.
16. Talk and software demonstration: MACSYMA: a guide for the perplexed, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, March 5, 1990.
17. Talk: Exact solitary wave solutions of non-linear evolution and wave equations using a direct algebraic method and MACSYMA, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, October 2, 1989.
18. Talk: Construction of explicit and implicit solitary wave solutions of classes of nonlinear evolution and wave equations, Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado, July 7, 1989.
19. Talk: Connections between the Dym, KdV, and the MKdV equations, Department of Mathematics and Mathematical Research Center, The University of Wisconsin, Madison, Wisconsin, October 12, 1988.
20. Talk and software demonstration: MACSYMA: Reboot, Department of Mathematics, University of Wisconsin, Madison, Wisconsin, November 11, 1987.
21. Talk and software demonstration: MACSYMA: A guide for the perplexed, Department of Mathematics, University of Wisconsin, Madison, Wisconsin, November 4, 1987.
22. Talk: Intimate connections between the KdV, the MKdV, and the Harry Dym equations, Department of Mathematics and Mathematical Research Center, The University of Wisconsin, Madison, Wisconsin, October 21, 1987.
23. Talk and software demonstration: MACSYMA, Department of Mathematics and Mathematical Research Center, University of Wisconsin, Madison, Wisconsin, October 20, 1987.
24. Talk: Developments in acousto-optics, Department of Mathematics and Mathematical Research Center, University of Wisconsin, Madison, Wisconsin, September 30, 1986.
25. Talk: Mathematical aspects of physics/engineering developments in nonlinear waves and acousto-optics, Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, March 21, 1986.
26. Talk: Exact solitary wave solutions of nonlinear evolution and wave equations using a direct algebraic method, Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, February 13, 1986.
27. Talk: Exact solitary wave solutions of nonlinear evolution and wave equations using a direct algebraic method, Department of Mathematics, University of Iowa, Iowa City, Iowa, November 21, 1985.
28. Talk: Outline of a general direct method of constructing solitary waves from linear solutions, Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, April 19, 1984.
29. Talk: Some recent developments in the theory of acousto-optics, Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, March 8, 1984.

Participation in Conferences and Workshops

1. Opening Session of International Symposium II on Unconventional Plasmas, Eindhoven University of Technology, Eindhoven, The Netherlands, August 14-16, 2006.
2. Second Front Range Applied Mathematics Student Conference, University of Colorado, Denver, Colorado, March 11, 2006.
3. First Annual Front Range Undergraduate Mathematical Sciences Conference, Colorado School of Mines, Golden, Colorado, October 30, 2004.
4. NSF-CBMS Regional Conference on Numerical Methods in Forward and Inverse Electromagnetic Scattering, Colorado School of Mines, Golden, Colorado, June 3-7, 2002.
5. Board of Trustees Conference Colorado School of Mines, Allenspark, Colorado, June 11-13, 1998.
6. Conference on Education: Teaching with Technology, Colorado School of Mines, Golden, Colorado, July 29-31, 1996.
7. Joint AMS-BeNeLux International Meeting, University of Antwerp, Antwerp, Belgium, May 22-25, 1996.
8. Kick-off Meeting, Multidisciplinary University Research Initiative (MURI), Air Force Office of Scientific Research Computational Electromagnetics Initiative, University of Delaware, Newark, Delaware, November 4, 1995.
9. Mini-conference "Rocky Mountain Experience IV", University of Colorado, Boulder, Colorado, August 3-4, 1994.
10. Mini-conference "Rocky Mountain Experience III", University of Colorado, Boulder, Colorado, August 17-18, 1993.
11. Midwest Dynamical Systems Conference, University of Colorado, Boulder, Colorado, March 26-28, 1993.
12. Los Alamos Days, University of Colorado, Boulder, Colorado, March 25, 1993.
13. Contact Group "Theoretical and Analytical Mechanics", University of Ghent, Ghent, Belgium, December 19, 1991.
14. Addison-Wesley Workshop on "Technology in the Mathematics Curriculum", Denver, Colorado, November 22, 1991.
15. Workshop on Computer Algebra Software and the Teaching of Calculus, Department of Mathematics and Computer Science, University of Denver, Denver, Colorado, October 5-7, 1990.
16. Workshop on Solitons in Physics and Mathematics, Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, Minnesota, September 12-16, 1988.
17. Inter-university Postdoctoral Symposium on Field Theory and Statistical Mechanics, Han-sur-Lesse, Belgium, October 12-13, 1984.
18. International School of Physical Acoustics: Fundamental Principles and Applications of Acoustic Waves, Erice, Trapani, Italy, November 30-December 10, 1982.
19. Inter-university Postdoctoral Symposium on Field Theory and Statistical Mechanics, Houthalen, Belgium, October 1-2, 1982.
20. Solitons `82: Scott Russell Centenary Conference and Workshop, Heriot-Watt University, Edinburgh, U.K., August 22-27, 1982.
21. International Post University Courses, University of Ghent, Ghent, Belgium, August 15-21, 1982.
22. Dynamics Days Twente `82, Twente University of Technology, Enschede, The Netherlands, May 25-26, 1982.
23. Conference of the Belgian Mathematical Society, University of Antwerp, Antwerp, Belgium, May 13-14, 1982.
24. Inter-university Postdoctoral Symposium on Geodesy and Geophysics, Han-sur-Lesse, Belgium, February 17-19, 1982.
25. Inter-university Postdoctoral Symposium on Field Theory and Statistical Mechanics, Tiege-lez-Spa, Belgium, October 2-3, 1981.
26. Workshop II on (nonlinear) Stability in Magneto-hydro-dynamics, University of Antwerp, Antwerp, Belgium, September 1-30, 1980.
27. Dynamics Days Twente `80, Twente University of Technology, Enschede, The Netherlands, April 15-16, 1980.
28. Inter-university Postdoctoral Symposium on Field Theory and Statistical Mechanics, Kasterlee, Belgium, October 5-6, 1979.