Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1978__19_1_a11, author = {Kadle\v{c}ek, Ji\v{r}i}, title = {Closure conditions in the nets}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {119--133}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {1978}, mrnumber = {492374}, zbl = {0389.51004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1978__19_1_a11/} }
Kadleček, Jiři. Closure conditions in the nets. Commentationes Mathematicae Universitatis Carolinae, Tome 19 (1978) no. 1, pp. 119-133. http://geodesic.mathdoc.fr/item/CMUC_1978__19_1_a11/