Yousaf Ali, A. R. Awan and M. Y. Ashraf
Asian Journal of Plant Sciences 1 ( 2 ): 117 - 118 , 2002
Zafar Iqbal Khan, M. Ashraf, M. Y. Ashraf, Z. Rahman and Altaf Hussain
Journal of Animal and Veterinary Advances 2 ( 7 ): 375 - 381 , 2003