Nazir Hussain, Ghulam Sarwar, J. Iqbal, R.A. Roy and Jalil Akhtar
Asian Journal of Plant Sciences 2 ( 7 ): 526 - 531 , 2003
L.A. Lodhi, Z. I. Qureshi, F.R. Chohan, J. Iqbal and I. Ahmad
Pakistan Journal of Biological Sciences 1 ( 4 ): 402 - 404 , 1998