Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1942__3_2_114605, author = {Sebasti\~ao e Silva, J.}, title = {Les ensembles ferm\'es et le probl\`eme de {Wiener}}, journal = {Portugaliae mathematica}, pages = {124--131}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1942}, mrnumber = {0007103}, zbl = {0026.43201}, language = {fr}, url = {http://geodesic.mathdoc.fr/item/PORMA_1942__3_2_114605/} }
Sebastião e Silva, J. Les ensembles fermés et le problème de Wiener. Portugaliae mathematica, Tome 3 (1942) no. 2, pp. 124-131. http://geodesic.mathdoc.fr/item/PORMA_1942__3_2_114605/