Ejaz Parvez, Shahid Hussain, Abdul Rashid and Shahid Nisar
Asian Journal of Plant Sciences 2 ( 17 ): 1135 - 1137 , 2003
Ejaz Parvez, Shahid Hussain, Abdul Rashid and M. Zafar Ahmad
Pakistan Journal of Biological Sciences 6 ( 23 ): 1942 - 1944 , 2003