1. R. A. Siddiqui:
Central Laboratories, Pakistan Council of Scientific and Industrial Research (PCSIR), Karachi, West-Pakistan
2. K. M. Bhatti:
Central Laboratories, Pakistan Council of Scientific and Industrial Research (PCSIR), Karachi, West-Pakistan
3. Shaukat Nikhat:
Central Laboratories, Pakistan Council of Scientific and Industrial Research (PCSIR), Karachi, West-Pakistan