Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1990__31_1_a18, author = {Simon, Petr}, title = {A note on nowhere dense sets in $\omega^\ast$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {145--147}, publisher = {mathdoc}, volume = {31}, number = {1}, year = {1990}, mrnumber = {1056181}, zbl = {0696.54019}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_1_a18/} }
Simon, Petr. A note on nowhere dense sets in $\omega^\ast$. Commentationes Mathematicae Universitatis Carolinae, Tome 31 (1990) no. 1, pp. 145-147. http://geodesic.mathdoc.fr/item/CMUC_1990__31_1_a18/