1. Department of Mathematics University of Sialkot, Sialkot, Pakistan
2. Department of Mathematics, College of Science Al-Zulfi, Majmaah University, Al-Majmaah, Saudi Arabia
3. Mathemtaics Department, Faculty of Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
4. College of Engineering Mechanical Engineering Department, King Khalid University, Abha, Saudi Arabia