1. Department of Mathematics, Islamia College Peshawar, Peshawar 25000, Khyber Pakhtunkhwa, Pakistan
2. Mathematical Sciences Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
3. Department of Mathematics, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia
4. Department of Mathematics, Pabna University of Science & Technology, Pabna-6600, Bangladesh