@article{GDZPPN001260766, title = {Orthodox semigroups with complemented congruence lattices.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {53-58}, zbl = {0716.20043}, url = {http://dml.mathdoc.fr/item/GDZPPN001260766} }
Auinger, K. Orthodox semigroups with complemented congruence lattices.. Semigroup forum, Tome 43 (1991) pp. 53-58. http://gdmltest.u-ga.fr/item/GDZPPN001260766/