1. G. T. Kazmi:
Department of Chemistry, University of Sargodha, Sargodha, Pakistan
2. I. H. Bukhari:
Department of Chemistry, University of Sargodha, Sargodha, Pakistan
3. Z. H. Nazli:
Govt. College for Women Madina Town, Faisalabad, Pakistan
4. F. A. Chughtai:
University of Agriculture, Faisalabad, Pakistan