International Conference in honor of A. Connes, Paris, March 29 - April 6, 2007.
International Conference \Noncommutative Geometry", Vanderbilt University, Nashville, May 2008.
International Conference in honor of Prof. J. Cuntz, Muenster, Germany, September 24 - 27, 2008.
International Symposion, University of Munster, Germany, June 2006
International Conference "Topology, analysis, and applications to mathematical physics," Moscow State University, February 2005
International Conference "Noncommutative Geometry," Vanderbilt University, Nashville, May 2003
International Conference “Quantization and Noncommutative geometry,” MSRI, Berkeley, April 2001
North British Functional Analysis Seminar, Edinburgh, May 2000
International Conference “Noncommutative geometry,” Strasbourg, December 1997
International Conference “E-theory, Quantization, and Deformations” at Dartmouth College, September 1997
International Conference “Operator Algebras and Singular Spaces” at the University Aix-Marseille II, November 1996
Canadian Operator Symposium at the Fields Institute, Waterloo, June 1995
International Conference “Quantized Geometry” at the Ohio State University, Columbus, May 1991
Oberwolfach International Meetings: “Topology,” 1988; “C^*-algebras',” 1991; “Novikov Conjectures, Index Theorems and Rigidity,” 1993; “C^*-algebras',” 1996
International Conference “Topology,” Baku (USSR), October 1987
International Conference “Operator Theory,” Bucharest, August 1985
A 45-minute address at the International Congress of Mathematicians in Warsaw, August 1983
