Invited speaker at the Stieltjes Analysis Colloquium, Thomas Stieltjes Institute for Mathematics, Amsterdam, the Netherlands, April 8, 2002.

nvited lecturer at the minicourse A short course on Nevanlinna-Pick interpolation theory,  Åbo Academi University, November 26 - 29, 2001.

Invited speaker at  Cybernetics in the 21st Century: Information and Complexity in Control Theory, University of Tokyo, Japan,  November 1 - 2, 2001. photo

Plenary speaker at Fourth SIAM Conference on Linear Algebra in Signals, Systems and Control, Boston, USA, August 13-16, 2001.

Plenary speaker at 5th IFAC Symposium "Nonlinear Control Systems" (NOLCOS 2001),  Saint Petersburg, Russia, July 4 - 6, 2001.

Plenary speaker at  Fourth Russian-Swedish Control Conference, Moscow, May 14 - 16, 2001.

Plenary speaker at  Asian Control Conference(ASCC), Shanghai, China, July 4 - 7, 2000. photo1, photo2, photo3

Zaborszky Lecturer for the year 2000, Washington University, St. Louis,  May 8, 9, and 10, 2000.

Plenary speaker at the Sixth St. Petersburg Symposium on Adaptive Systems Theory, St. Petersburg, Russia,  September 7 - 9, 1999.

Invited speaker at  Recent Advances in Systems and Control, Washington University, St. Louis, December 1, 1999.

Invited speaker at Advances in Systems Theory, Cambridge, Massachusetts, October, 15--16, 1999.

Plenary speaker at International Conference of Dynamical Systems: Stability, Control, Optimization, Minsk, Belarus, September 28--October 4,1998.

Invited speaker at  Operators, Systems, and Linear Algebra: Three Decades of Algebraic Systems Theory, workshop in honor of Paul A. Fuhrmann on his 60th birthday, Kaiserslautern, Germany, September 24--26, 1997.

Plenary speaker at International Conference on Control of Oscillations and Chaos, St. Petersburg, Russia, August 27 - 29, 1997.

Two-hour Tutorial Lecture at 11th IFAC Symposium on System Identification, Fukuoka, Japan, July 8--11,1997.

Plenary speaker at Conference on Stochastic Differential and Difference Equations, Györ, Hungary, August 21--24, 1996.

Plenary speaker at 12th International Symposium on the Mathematical Theory of Networks and Systems (MTNS96), St Louis, June 1996.

Invited speaker at Workshop on the dynamics and control of physical systems, Cortona, Italy, May 22--25, 1995.

Plenary speaker at Workshop on "Nonlinear and Game Theoretic Control Synthesis", Euler Mathematical Institute, St. Petersburg, March 13--26, 1995.

Plenary speaker at the Annual Meeting of Finnish Mathematicians, Vaasa, Finland, January 9-10, 1995.

Speaker at special workshop organized in my honor at the occation of receiving honorary membership in the Hungarian Operational Research Society, Budapest, October 31, 1994.

Plenary speaker, IEEE European Workshop on Computer Intensive Methods in Control and Signal Processing, Prague, September 7--9, 1994.

Keynote speaker, IFAC Symposium on Modeling and Identification, Herzelia, Israel, June 21, 1994.

Invited speaker at workshop on "Systems and Control Theory: Retrospect and  Prospect", Cortona, Italy, April 15--20.1993.

Plenary speaker Third Conference on Computation and Control, Bozeman, Montana, August 5--11, 1992.

Invited speaker at Systems, Models and Feedback: Theory and Applications, Workshop in honor of Professor Antonio Ruberti, Capri, June 15--17, 1992.

Invited speaker at Stochastic Theory and Adaptive Control Workshop (sponsered by NSF), University of Kansas, September 26--28, 1991.

Plenary speaker at Preconference to the MTNS, Hangzhou, China,  June 13, 1991.

Plenary speaker at Second Conference on Computation and Control, Bozeman, Montana, August 1 - 11, 1990.

Plenary speaker at the "International Interdisciplinary  Workshop on Modern Directions in Time Series Analysis" sponsored by the Institute of Mathematics and its Applications, University of Minnesota, July 1990.

Plenary speaker at Fifth IMA International Conference on Control Theory, Glasgow, Scotland, September 14-16, 1988.

Plenary speaker at IFAC Symposium on Stochastic Control, Vilnius, Lithuania, May 19-23, 1986.