@article{JRAM_1976__0286_0287_151785,
     author = {H. Mitsch},
     title = {Kongruenzen in {Rechtsverbandshalbgruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {227--238},
     year = {1976},
     volume = {0286_0287},
     zbl = {0334.06008},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__0286_0287_151785/}
}