@article{10_21136_CMJ_1981_101737,
     author = {Masat, Francis E.},
     title = {Congruences on conventional semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {199--205},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1981},
     doi = {10.21136/CMJ.1981.101737},
     mrnumber = {611075},
     zbl = {0468.20050},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1981.101737/}
}