1. Department of Mathematics and Statistics, Imam Mohammad Ibn Saud Islamic University, Riyadh 11566, Saudi Arabia
2. MKSSS’s Cummins College of Engineering for Women, Pune 411052, India
3. Department of Mathematics, AMITY School of Applied Sciences, AMITY University Rajasthan, Jaipur 302002, India
4. School of Liberal Studies, Dr B. R. Ambedkar University Delhi, Delhi 110006, India