%0 Journal Article %A Aidan Sims %A Samuel B. G. Webster %T A Direct Approach to Co-Universal Algebras Associated to Directed Graphs %J Bulletin of the Malaysian Mathematical Society %D 2010 %V 33 %N 2 %U http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a4/ %F BMMS_2010_33_2_a4