1. Department of Mathematics, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh, India
2. School of Technology, The Apollo University, Chittoor, Andhra Pradesh, India
3. Department of Mathematics, Koneru Lakshmaiah Education Foundation, Bowrampet, Hyderabad, Telangana, India
4. Department of Mathematics, Jesse College (affiliated to North West Bangalore), Bangalore, India
5. Department of Mathematics, The University of Faisalabad, Faisalabad, Pakistan
6. Department of Mathematics, College of Science, Qassim University, Buraydah, Saudi Arabia