Author/Authors :
Adabitabar Firozja، M نويسنده Department of mathematics, Qaemshar Branch, Islamic Azad University, Qaemshahr, Iran , , Babakordi، F نويسنده Department of mathematics, Qaemshar Branch, Islamic Azad University, Qaemshahr, Iran , , Shahhosseini، M نويسنده Department of mathematics, Qaemshar Branch, Islamic Azad University, Qaemshahr, Iran ,
