1. Department of Mathematics, Institute of Arts and Sciences, Government College University, Faisalabad, Punjab, Pakistan
2. Department of Mathematical Sciences, Faculty of Basic Sciences, BUITEMS, Quetta, Balochistan, Pakistan
3. Department of Applied Sciences, National Textile University, Faisalabad, Punjab, Pakistan
4. Department of Mathematics, Riphah International University Faisalabad, Faisalabad, Punjab, Pakistan
5. Graduate School, Wesleyan University Philippines, Cabanatuan, Nueva Ecija, Philippines