1. Department of Mathematics, COMSATS University Islamabad Lahore Campus, Lahore, 54000 Pakistan.
2. Center for Modeling & Computer Simulation, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran-31261, Saudi Arabia; Department of Mathematics, International Islamic University, Islamabad, Pakistan.
3. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China.
4. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China.
5. Department of Mathematics and Statistics, FBAS, IIUI, Islamabad, Pakistan.