1. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
2. Faculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul, Turkey
3. Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, Turkey
4. Financial Mathematics and Actuarial Science (FMAS)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia