%0 Journal Article %A Auinger, Karl %T Boolean Congruence Lattices of Orthodox Semigroups %J Canadian journal of mathematics %D 1991 %P 225-241 %V 43 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1991-012-5/ %R 10.4153/CJM-1991-012-5 %F 10_4153_CJM_1991_012_5