Enayat, Ali (ed.) et al., Logic in Tehran. Proceedings of the workshop and conference on logic, algebra and arithmetic, Tehran, Iran, October 18–22, 2003. Wellesley, MA: AK Peters (ISBN 1-56881-296-5/pbk; 1-56881-295-7/hbk). Lecture Notes in Logic 26, 23-41 (2006).