1. Department of Mathematics, City University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa 25000, Pakistan
2. Dipartimento di Matematica e Fisica, Universit‘a degli Studi della Campania “Luigi Vanvitelli,” Caserta 81100, Italy
3. Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II, 39,00186 Roma, Italy
4. Department of Mathematics, King Saud University, Riyadh 145111, Saudi Arabia
5. School of Mathematics and Information Science, Henan Polytechnic University, Jiaozuo 454000, China
6. Department of Mathematics, Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand