%0 Journal Article %A J. B. Fountain %A P. Lockley %T Semilattices of groups with distributive congruence lattice. %J Semigroup forum %D 1977 %P 81-92 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1977__14_186358/ %F SF_1977__14_186358