1. Department of Mathematics, COMSATS University , Islambad Campus, Islamabad , Pakistan
2. Department of Computer Science and Mathematics, Lebanese American University , Beirut , Lebanon
3. Department of Mathematics, Near East University, Mathematics Research Center, Near East Boulevard, PC: 99138 , Nicosia/Mersin 10 , Turkey
4. Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II , 39,00186 Roma , Italy
5. Operational Research Center in Healthcare, Near East University, Near East Boulevard, PC: 99138 , Nicosia/Mersin 10 , Turkey
6. Department of Mathematics, College of Science, King Saud University , P.O. Box 2455 , Riyadh 11451 , Saudi Arabia
7. School of Mathematics and Information Science, Henan Polytechnic University , Jiaozuo 454000 , China