1. Department of Mathematics, Anurag University, Hyderabad, India
2. Department of Mathematics, JNTUH University College of Engineering, Hyderabad, India
3. School of Mathematics and Statistics, Central South University, Changsha, P.R. China
4. Mehran UET Shaheed Zulfiqar Ali Bhutto Campus Khairpur, Pakistan
5. Department of Mathematics, College of Science, King Khalid University, Abha, Saudi Arabia
6. Department of Mathematics, Capital University of Science and Technology, Islamabad, Pakistan
7. Sciences and Engineering Research Group, Scientific Research Center, Al-Ayen University, Nasiriyah, Iraq
8. Finance and Insurance Department, College of Business Administration, Northern Border University, Arar, Saudi Arabia
9. Department of Mathematics, Faculty of Science, New Valley University, Al-Kharga, Egypt
10. Department of Mathematics, College of Science, Qassim University, Buraydah, Saudi Arabia
11. Mathematics Department, Faculty of Science, Helwan University, Cairo, Egypt