1. Department of Mathematics, AcharyaNagarjuna University Campus, Ongole, Andhra Pradesh, India
2. Department of Mathematics, Prasad V. Potluri Siddharth Institute of Technology, Vijayawada, Andhra Pradesh, India
3. Department of Mathematics, Lakireddy Bali Reddy College of Engineering, Mylavaram, Andhra Pradesh, India
4. Faculty of Engineering, Kuwait College of Science and Technology, Doha District, Kuwait