Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1989__30_2_a1, author = {Koslowski, J\"urgen}, title = {Topological hulls revisited}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {213--225}, publisher = {mathdoc}, volume = {30}, number = {2}, year = {1989}, mrnumber = {1014121}, zbl = {0677.18005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_2_a1/} }
Koslowski, Jürgen. Topological hulls revisited. Commentationes Mathematicae Universitatis Carolinae, Tome 30 (1989) no. 2, pp. 213-225. http://geodesic.mathdoc.fr/item/CMUC_1989__30_2_a1/