Fields Institute program on analysis, partial differential equations and combinatorics, with I. Laba, M. Lacey and E. Sawyer, 2008.

Special Session on Harmonic Analysis (with Michael Lacey) at the regional AMS conference in Salt Lake City, Utah, October 3-5, 2006.

NSF Focused Research Group Conference at the University of Missouri-Columbia, March 2006, with S. Hofmann, D. Mitrea and M. Mitrea.

Combinatorial and additive number theory (CANT 2005). A conference in celebration of Mel Nathanson’s 60th birthday. (Member of the organizing committee).

CMS conference at Simon Fraser University in Vancouver (with I. Laba), December 6-8, 2003.

ESI (Schrodinger Insitute in Vienna) Workshop on mathematics related to the Kakeya Needle Problem, (with I. Laba and D. Muller), Vienna, Austria,
Fall 2003.

A conference on Harmonic Analysis and Partial Differential Equations at the University of Missouri, May 8-11, 2002, (with L. Grafakos, S. Hofmann, and I. Verbitsky).

Workshop on convexity and Fourier analysis, (with L. Brandolini, L. Colzani, and G. Travaglini), Milan, Italy, June 2001.