پديدآورندگان :
Sattari Saman Department of Mathematics, Faculty of Sciences, University of Kurdistan, Address, P.O. Box 416, Sanandaj, Iran, E-mail: saman.satari84@gmail.com , Ghahramani Hoger Department of Mathematics, Faculty of Sciences, University of Kurdistan, Address, P.O. Box 416, Sanandaj, Iran, E-mail: saman.satari84@gmail.com