1. NAAM Research Group, Department of Mathematics, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
2. LaSIE, Pôle Sciences et Technologies, Université de La Rochelle, Avenue Michel Crépeau, La Rochelle 17031, France
3. Department of Mathematics, Faculty of Sciences, Razi University, Kermanshah 67149, Iran