Farzollah Mirzapour Associate professor (Retired) Email f.mirza@znu.ac.ir URL http://www.znu.ac.ir/members/mirzapour-farzollah Tell 33052355 +98 (0) 24 3305 2528 Address Department of matmatith, Faculty of sciences, University of Zanjan, P.O.Box 45195-313, Zanjan, IRAN