Khalid Rafiq, M. Maqsood, H. N. Asghar, M. Arshad and M. Nawaz
Pakistan Journal of Biological Sciences 2 ( 3 ): 960 - 961 , 1999
Muhammad Yusuf, M. Maqsood, M. Ashraf and M. Ashraf Rathore
Pakistan Journal of Biological Sciences 2 ( 4 ): 1588 - 1593 , 1999