@article{MOMA_1990__109_2_178470,
     author = {A. Cherubini and C. Bonzini},
     title = {Semimodularity of the {Congruence} {Lattice} on {Regular} {...-Semigroups.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {205--220},
     publisher = {mathdoc},
     volume = {109},
     number = {2},
     year = {1990},
     zbl = {0713.20055},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1990__109_2_178470/}
}