1. Department of Mathematics, Air University, PAF Complex E-9, Islamabad, 44000, Pakistan
2. Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia
3. Stochastic Analysis and Optimization Research Group, Department of Mathematics, Air University, PAF Complex E-9, Islamabad, 44000, Pakistan
4. Department of Mathematics, Comsats University Islamabad, Park Road, Islamabad, 45550, Pakistan