1. State Key Laboratory for Geo-Mechanics and Deep Underground Engineering, and School of Mathematics, China University of Mining and Technology, Xuzhou, China + Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia + Department of Mathematics, College of Science, Kyung Hee University, Seoul, Republic of Korea
2. Mathematics Department, Faculty of Science, Cairo University, Giza, Egypt
3. Computer Engineering Department, Faculty of Engineering and Natural Sciences, Biruni University, Istanbul, Turkey