1. Stochastic Analysis and Optimization Research Group, Department of MathematicsAir UniversityPAF Complex E-9IslamabadPakistan
2. Faculty of EngineeringUniversity of Central PunjabLahorePakistan
3. Department of MathematicsCankaya University06530, BalgatAnkaraTurkey
4. Institute of Space SciencesMagurele-BucharestRomania
5. Department of MathematicsUniversity of Management and TechnologyLahorePakistan