Khalid Rafiq, M. Maqsood, H. N. Asghar, M. Arshad and M. Nawaz
Pakistan Journal of Biological Sciences 2 ( 3 ): 960 - 961 , 1999
Muhammad Maqsood, Muhammad Irshad, M. Iftikhar Hussain and Khalid Rafiq
Pakistan Journal of Biological Sciences 3 ( 11 ): 1831 - 1832 , 2000