1. Department of Mathematics & Statistics, The University of Haripur, Haripur 22620, Pakistan
2. Department of Mathematics, Islamia College Peshawar, 25120 Khyber Pakhtunkhawa, Pakistan
3. Industrial Engineering Department, College of Engineering, University of Ha'il, Ha'il 55476, Kingdom of Saudi Arabia
4. Department of Architectural Engineering, College of Engineering, University of Ha'il, Ha'il 55476, Kingdom of Saudi Arabia