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 Harmonic analysis and approximations” September, 1998,  Nor Amberd, Armenia

 Djrbashian Memorial Conference, Yerevan, Armenia, 1998

 
 “Harmonic analysis and approximations, I” September , 1998,  Nor Amberd, Armenia“Harmonic analysis and approximations, II” September , 2001,  Nor Amberd, Armenia

 Isaac International Conference, 2002, Yerevan, Armenia.

 Seventh Int. Symposium on Orthogonal Polynomials, Special Functions and Applications, Copenhagen, Denmark, August 18-22, 2003

 International Conference, Mathematics in Armenia, Advances and Perspectives, September 30 -  October 7, 2003, Tsahkadzor, ARMENIA

 12th Saratov winter school, " Modern problems of the theory  Functions and their application ", 2004,. Saratov, Russia.

 The first International Workshop on Polynomial Orthogonality and Applications, Annaba, Algeria, 2004

 Approximation and Harmonic Analysis, Auckland, New Zealand, 2005

 International Conference of Numerical Analysis and Applied Mathematics, ICNAAM , 2005

 “Harmonic analysis and approximations, III” September , September 20 -  27,  2005, Tsahkadzor, ARMENIA

 
 International Conference on Harmonic Analysis and Ergodic Theory, December 2-4, 2005, Chicago, USA

 HARMONIC ANALYSIS AND RELATED PROBLEMS, Zaros, Crete, Greece19-23 June 2006