Pakistan Journal of Biological Sciences 6 ( 1 ): 51 - 56 , 2003
Pakistan Journal of Biological Sciences 9 ( 10 ): 1929 - 1934 , 2006
Pakistan Journal of Biological Sciences 8 ( 10 ): 1351 - 1356 , 2005
Pakistan Journal of Biological Sciences 5 ( 11 ): 1155 - 1159 , 2002