@article{SF_1997__54_2_135504,
     author = {H. Mitsch},
     title = {Semigroups and their lattice of congruences {II.}},
     journal = {Semigroup forum},
     pages = {1--42},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {1997},
     zbl = {0872.20052},
     url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135504/}
}