Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1928__98_159204, author = {P. Urysohn and P. Alexandroff}, title = {\"Uber nulldimensionale {Punktmengen}}, journal = {Mathematische Annalen}, pages = {89--106}, publisher = {mathdoc}, volume = {98}, year = {1928}, zbl = {53.0559.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1928__98_159204/} }
P. Urysohn; P. Alexandroff. Über nulldimensionale Punktmengen. Mathematische Annalen, Tome 98 (1928), pp. 89-106. http://geodesic.mathdoc.fr/item/MAN_1928__98_159204/