1. Department of Physics, BUITEMS, Quetta, Pakistan
2. Department of Physics, FBAS, International Islamic University, Islamabad, Pakistan
3. Physics Department, Hazara University, Mansehra, Pakistan
4. Department of Physics, Allama Iqbal University Islamabad, Islamabad, Pakistan
5. Department of Physics, Federal Urdu University, Islamabad, Pakistan
6. Department of Physics, Quaid-i-Azam University Islamabad, Islamabad, Pakistan