1. Department of Mathematics, Capital University of Science and Technology (CUST), Islamabad, Pakistan
2. PYP-Mathematics, College of general studies, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
3. Department of Mathematics, Lahore College for Women University, Lahore, Pakistan
4. Department of Basic Medical sciences, College of Applied Medical College Sciences, King Khalid University Abha, Saudi Arabia
5. Department of Sciences and Humanities, National University of Computer and Emerging Sciences, Peshawar, Pakistan