1. Department of Mathematical Sciences, University of Lakki Marwat, Lakki Marwat, Pakistan
2. Department of Mathematics, Abdul Wali Khan University, Mardan, Pakistan
3. Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia
4. College of Engineering, Al Ain University, Al Ain, UAE
5. Department of Mathematics, Tafila Technical University, Tafila, Jordan