1. Department of Mathematics, Bhagat Singh Govt. P.G. College, Jaora, Madhya Pradesh, India
2. Department of Mathematics, Govt. M.V.M., Bhopal, Madhya Pradesh, India
3. Department of Mathematics, Wollo University, Dessie, Ethiopia
4. Department of Mathematics and Statistics, Manipal University Jaipur, Rajasthan, India
5. Department of Mathematics, Prince Sattam bin Abdulaziz University, Wadi Aldawasir, Saudi Arabia