Dr. Farhad H Jafarpour
   Bu-Ali Sina University
   Mehdiyeh Av. Hamadan
   IRAN

   Dr. Farhad H Jafarpour
   Institute for studies in theoretical Physics and Mathematics (IPM)
   P.O. Box 19395-5531 Tehran
   IRAN

   E-Mail:[email protected]
   Web Page:http://home.basu.ac.ir/~farhad