I have put some of my problem sets I give to the Iranian team, for IMO 2007, and some of great books, I love them and I recommend everybody to read them.

Problem Set 1, for Iraninan Team 2007

Problem Set 2, for Iraninan Team 2007

Problem Set 3, for Iraninan Team 2007

Problem Set 4, for Iraninan Team 2007

Problem Set, Iranian Summer Program 2008

Problem Set, Iranian Team 2009