Abd Elrhman, Babiker, 		Meseka, Silvestro, 		Ali, Eltahir, AND 		Ibrahim, Abu Elhassan.
" Genotype variability and stability in seed and forage yields of cowpea under Gezira conditions" <em>Gezira Journal of Agricultural Science</em> [Online], Volume 8 Number 1 (1 January 2010)