Muhammad Naeem, Salah-ud-Din Baber, Altaf-ur-Rehman Rao and M. Yasin Ashraf
Pakistan Journal of Biological Sciences 3 ( 5 ): 876 - 880 , 2000
Tariq Mahmood Qureshi, M. Yasin Ashraf, Asghari Bano and Faqir Hussain
Pakistan Journal of Biological Sciences 3 ( 12 ): 2112 - 2115 , 2000