Abdellaoui Raoudha, Ben Naceur M`barek, Ben Salah Hmidi, Mellouli Hafedh-Jamil and Ben Hmida
International Journal of Botany 3 ( 3 ): 283 - 289 , 2007
Ben Mbarek, Cheick- Mhamed Hatem, Abdellaoui Raoudha and Betta�b Leila
Journal of Agronomy 6 ( 3 ): 433 - 438 , 2007