@article{2089, author = {Sebasti\~ao e Silva, J.}, title = {Sur l'axiomatique des espaces de Hausdorff}, journal = {Portugaliae mathematica}, volume = {2}, year = {1941}, pages = {93-109}, zbl = {0025.23801}, mrnumber = {0004755}, language = {fr}, url = {http://dml.mathdoc.fr/item/2089} }
Sebastião e Silva, J. Sur l'axiomatique des espaces de Hausdorff. Portugaliae mathematica, Tome 2 (1941) pp. 93-109. http://gdmltest.u-ga.fr/item/2089/