1. M. M. Qureshi:
Institute of Chemical Engineering & Technology, Punjab University, Lahore, Pakistan
2. M. A. A. Butt:
Institute of Chemical Engineering & Technology, Punjab University, Lahore, Pakistan
3. M. Hanif:
Pakistan Council of Scientific & Industrial Research, PCSIR Laboratories, Lahore, Pakistan
4. M. Aslam Shahid:
Pakistan Council of Scientific & Industrial Research, PCSIR Laboratories, Lahore, Pakistan