1. Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
2. College of Mathematics and Computer Science, Zhejiang Normal University, Jinhua 321004, China
3. Department of Applied Mathematics, Zakir Hussain College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
4. Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah 211, Oman