Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1976__12_4_a6, author = {Fuchs, Jarom{\'\i}r}, title = {On closure operators on monoids}, journal = {Archivum mathematicum}, pages = {225--232}, publisher = {mathdoc}, volume = {12}, number = {4}, year = {1976}, mrnumber = {0435268}, zbl = {0363.20059}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1976__12_4_a6/} }
Fuchs, Jaromír. On closure operators on monoids. Archivum mathematicum, Tome 12 (1976) no. 4, pp. 225-232. http://geodesic.mathdoc.fr/item/ARM_1976__12_4_a6/