@article{SF_1991__42_3_135063,
     author = {K. Auinger},
     title = {Orthodox semigroups with complemented congruence lattices.},
     journal = {Semigroup forum},
     pages = {53--58},
     year = {1991},
     volume = {42},
     number = {3},
     zbl = {0716.20043},
     url = {http://geodesic.mathdoc.fr/item/SF_1991__42_3_135063/}
}