A. Hemmat, A. Rivaz, and H. Minbashian. Proceedings of the 23rd International Conference of the Jangjeon
Mathematical Society, Shahid Chamran University - Jangjeon Mathematical Society(Iran-S.Korea),
Ahvaz, Iran, (February 2010)
M. Kargar, H. Minbashian, and M. Yaghoobi.. Proceedings of the 4th International Conference on Fuzzy Information
& Engineering (ICFIE), Shomal University, Amol, Iran, (October 2010)