One or two-hour addresses in the conferences

• Periodic orbits and their bifurcations, Lumini, 1989,
• Resurgent functions, Paris, 1990,
• Dynamical systems, Nagoya, 1990,
• Dynamics days, Berlin, 1991,
• Colloque de Geometrie, Strasburg, 1991,
• Complex analytic methods in dynamical systems, Rio de Janeiro, 1992,
• Dynamical systems, Trieste, 1992,
• Geometrical colloquium, Moscow, 1993,
• Kolmogorov memorial conference, StPetersburg, 1993,
• Dynamical systems, Rio de Janeiro, 1993,
• Maryland-Penn State conference in Dynamical systems, College Park, 1994,
• Dynamical systems, Stony Brook, 1994,
• Dynamical systems, Moscow, 1994, Member of the Organizing Committee for the conference.
• International Congress in Dynamical systems, Montevideo, 1995,
• Ergodic Theory and Dynamical Systems (subject, not title), Jerusalem, May 1995
• Dynamical Systems, Trieste, May 1995,
• The Stokes Phenomenon and Hilbert's 16th Problem, Groningen, June 1995,
• Geometrie complex et Systems dynamique, Paris, July 1995,
• Dynamical Systems and Limit cycles (subject, not title), Lumini, September 1995,
• Symposium on Dynamical Systems (subject, not title), Delft September 1995,
• Workshop on Dynamical Systems, Warsow, October 1995,
• Annual Meeting of AMS, Orlando, January 1995,
• Contemporary problems in the Theory of dynamical systems, Nigniy Novgorod, July 1996,
• 20th Congress of A.M.A.S.E.S., Urbino, September 1996,
• Iterates of maps, Urbino, September 1996,
• Contemporary problems in mathematics, Samarkand, October 1996,
• Symposium on Planar vector fields, Leida, November 1996,
• Conference on Dynamical systems, Taejon, Korea, February 1997,
• International Congress in Dynamical systems, Guernavaca, Mexico, June 97,
• Arnoldfest (The conference in honour of V.I.Arnold's 60th birthday), Toronto, Canada, June 97,
• International Conference in Dynamical systems, Rio de Janeiro, Brasil, August 97.
• Conference on Polynomial vector fields, Lumini, France, October 97,
• Conference: Multiple time-scaled dynamical systems, Minneapolis, USA,October 97,
• Workshop on Laminations and Foliations, Stony Brook, USA, May 98,
• Conference dedicated to the Novikov's 60th birthday, Moscow, May 98,
• Local differentiable Dynamics and Applications to Bifurcation theory, LUC Diepenbeek, Belgium, June 98,
• Workshop on Dynamical Systems, Trieste, Italy, September 98,
• Memorial conference dedicated to the Pontriagin's 90th birthday, Moscow, August 98, joint talk presented by A.Gorodetski,
• Penn State Dynamical Systems workshop, October 99.
• International conference on Diff. Equat. Moscow, (MAI), August 99, joint talk presented by A.Gorodetski,
• Conference on geometric theory of planar vector fields, Lumini, France, October 99.
• Meeting of Canadian Mathematical Society, Montreal, December 99.
• Workshop on asymptotic series, differential algebra and finiteness problems in non-linear Dynamical systems, June 19 - July 7, 2000, Montreal.
• International conference on dynamical systems, July 19-28, 2000, IMPA, Rio-de-Janeiro.
• Dynamical Systems and Related Topics, Workshop, October 26-29, 2000, Penn State University, US.
• Global Invariant Manifolds in Dynamical Systems, Workshop, December 10-16, 2000, Oberwolfach, Germany.
• 2 talks at Petrovskii Centennial Conference, May 22-27, 2001, Moscow, Russia.
• International Conference "Differential and functional-differential equations", Moscow, August 11-17, 2002,
• Workshop "Differential equations" dedicated to the memory of Vladimir Lazutkin, St.Petersburg, Russia, August 18-20, 2002.
• Conference In honor of the 60th birthday of J.Mather (Princeton, October 2002).
• member of the Programm Commitee and a speaker at the Conference "MODERN THEORY OF DYNAMICAL SYSTEMS AND APPLICATIONS TO THEORETICAL CELESTIAL MECHANICS" dedicated to the memory and the 70th birthday of V.M. Alexeyev, Moscow, December 2002.
• Conference in honor of the 100th birthday of A.Kolmogorov, Moscow, June 2003.
• two talks at the Equadiff-03, Husselt, Belgium, 22-26 July 2003,
• Ramis Conference, Toulouse, 22-26 Sep-tember 2003,
• Dynamical systems workshop, Penn State, October 23-26, 2003.