1. Zahid Akhtar:
Department of Mathematics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
2. Hafiz Fukharuddin:
Department of Mathematics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
3. Ali Ahmad:
College of computer Science and information systems, Jazan University, Jazan, Saudi Arabia
4. Muhammad Ibrahim:
Center for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University, Multan, Pakistan