%0 Journal Article %A H. Mitsch %T Semigroups and their lattice of congruences II. %J Semigroup forum %D 1997 %P 1-42 %V 54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1997__54_2_135504/ %F SF_1997__54_2_135504