Mahmoud Iskandarani, Ghaleb El-Refae and Shorouq F. El-Etter
American Journal of Applied Sciences 3 ( 7 ): 1910 - 1915 , 2006
Mahmoud Iskandarani and Ghaleb El-Refae
American Journal of Applied Sciences 4 ( 2 ): 102 - 105 , 2007