Elali Elkhalf, Ahmad, 		Ali, Eltahir, 		Meseka, Silvestro, AND 		Ibrahim, Abu Elhassan.
" Combining ability and heterosis in single crosses derived from some local maize (Zea mays L.) inbred lines" <em>Gezira Journal of Agricultural Science</em> [Online], Volume 8 Number 1 (1 January 2010)