S.S.A. Gillani - Government College University, Lahore
A. Ejaz
M. Shakil - University of Gujrat
Tousif Hussain - Government College University, Lahore
Riaz Ahmad - Government College University, Lahore
Muhammad Rafique - Namal College
Waris Ali - Department of Physics, Government Islamia College Civil Lines Lahore, Lahore 54000, Pakistan
Khurram Shahzad - King Abdulaziz University
Arshad Mahmood Ali - King Abdulaziz University