Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_2001__51_3_a1, author = {Thron, Reinhard and Koppitz, J\"org}, title = {Closure operators and generating sets}, journal = {Mathematica slovaca}, pages = {259--268}, publisher = {mathdoc}, volume = {51}, number = {3}, year = {2001}, mrnumber = {1842313}, zbl = {0987.06004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_2001__51_3_a1/} }
Thron, Reinhard; Koppitz, Jörg. Closure operators and generating sets. Mathematica slovaca, Tome 51 (2001) no. 3, pp. 259-268. http://geodesic.mathdoc.fr/item/MASLO_2001__51_3_a1/