%0 Journal Article %A Bijan Davvaz %T Some Results on Congruences on Semihypergroups %J Bulletin of the Malaysian Mathematical Society %D 2000 %V 23 %N 1 %U http://geodesic.mathdoc.fr/item/BMMS_2000_23_1_a5/ %F BMMS_2000_23_1_a5