M. Ayub, A. Tanveer, Z. Iqbal, M.S. Sharar and M. Azam
Pakistan Journal of Biological Sciences 1 ( 4 ): 348 - 350 , 1998
N. Iqbal, H. Y. Ashraf, F. Javed, Z. Iqbal and G. H. Shah
Pakistan Journal of Biological Sciences 1 ( 3 ): 226 - 227 , 1998