1. National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
2. Department of Physics, University of Engineering and Technology, Lahore, Pakistan
3. Department of Physics, Forman Christian College, Lahore, Pakistan
4. Institute of Chemical Sciences, Bahauddin Zakariya University Multan, Multan, Pakistan
5. Department of Physics, Hazara University Mansehra, Mansehra, Pakistan
6. Department of Chemistry, University of Turbat, Turbat, Pakistan
7. Department of Physics and Astronomy, University of Nigeria, Nsukka, Nigeria