1. Department of Mathematics, Institute of Technical Education and Research, Siksha 'O' Anusandhan University, Bhubaneswar 751030, India
2. Department of Mathematics, Çankaya University 06790, Ankara, Turkey
3. Department of Mathematics, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
5. Department of Mathematics, Faculty of Technical Science, University Ismail Qemali, 9400 Vlora, Albania