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Asian Journal of Plant Sciences 2 ( 17 ): 1135 - 1137 , 2003
Ejaz Parvez, Shahid Hussain, Abdul Rashid and M. Zafar Ahmad
Pakistan Journal of Biological Sciences 6 ( 23 ): 1942 - 1944 , 2003
Aamer SAEED, Shahid HUSSAIN and Ulrich FLORKE
Turkish journal of chemistry 32 ( 4 ): 481 - 486 , 2008