• (Invited) Department of Mathematics and Informatics, Chiba University, Japan, August 18-24, 2019.
• (Invited) Mathematical Coding and Information Theory — A Special Session of the American Mathematical Society Sectional Meeting, University of Hawaii, Manoa, Honolulu, Hawaii, USA, March 22-24, 2019. 
• International Symposium on Information Theory and Its Applications (ISITA 2016), Monterey, California, USA, Oct. 30 – Nov. 2, 2016.
• Conference on Geometry, Algebra, Number Theory, and their Information Technology Applications, The Fields Institute, Toronto, June 13-16, 2016.
• 2015 Midwest Number Theory Conference, University of Illinois at Chicago, October 16-18, 2015.
• International Conference IPM 20 — Combinatorics 2009, IPM, Tehran, Iran, May 15-21, 2009.