@article{SF_1991__42_3_135085,
     author = {M.F. Janowitz},
     title = {Regularity of residuated mappings.},
     journal = {Semigroup forum},
     pages = {313--332},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0725.06002},
     url = {http://geodesic.mathdoc.fr/item/SF_1991__42_3_135085/}
}