Azhari H. Nour, Salah A. Elhussein, Nour A. Osman, Abduelrahman H. Nour and Mashitah M. Yusoff
American Journal of Applied Sciences 6 ( 7 ): 1359 - 1363 , 2009
Azhari H. Nour, Salah A. Elhussein, Nour A. Osman and Abduelrahman H. Nour
Journal of Applied Sciences 9 ( 14 ): 2645 - 2648 , 2009