%0 Journal Article %A J.A. Gerhard %T Injectives in equational classes of idempotent semigroups. %J Semigroup forum %D 1974 %P 36-53 %V 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1974__9_134058/ %F SF_1974__9_134058