1. Department of Mathematics, Faculty of Sciences, Ghazi University, Dera Ghazi Khan, Pakistan
2. Division of Science and Technology, Department of Mathematics, University of Education, Lahore, Pakistan
3. Department of Mathematical Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
4. Department of Mathematics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
5. Mathematics Department, College of Science, King Saud University, Riyadh, Saudi Arabia
6. Department of Engineering Science and Mathematics, Energy Engineering Division, Lulea University of Technology, Lulea, Sweden