1. Department of Mathematics, College of Science, Northern Border University, Arar, Saudi Arabia
2. Department of Mathematics, B V Raju Institute of Technology, Narsapur, Medak, Telangana, India
3. Department of Mathematics, College of Science, King Khalid University, Abha, Saudi Arabia
4. Department of Mathematics, Faculty of Science, South Valley University, Qena, Egypt
5. Department of Mathematics, ITER, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, Odisha, India