1. Department of Mathematics University of the Punjab, Quaid‐e‐Azam Campus Lahore Pakistan
2. Department of Mathematics University of Engineering and Technology Lahore Pakistan
3. Department of Physics, College of Sciences University of Bisha Bisha Saudi Arabia
4. Physics Department, Faculty of Science Al‐Azhar University Assiut Egypt
5. Department of Physics, College of Science King Khalid University Abha Saudi Arabia