1. A. K. Khattak:
Department of Chemistry, Gomal University, Dera Ismail Khan, Pakistan
2. K. Mahmood:
Department of Chemistry, Gomal University, Dera Ismail Khan, Pakistan
3. M. Afzal:
Department of Chemistry, Quaid-i Azam University, Islamabad, Pakistan
4. M. Saleem:
Department of Chemistry, Quaid-i Azam University, Islamabad, Pakistan
5. A. Qadeer:
Pakistan Atomic Energy Commission (PAEC), Islamabad, Pakistan