Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1941__2_1_114571, author = {Sebasti\~ao e Silva, J.}, title = {Problemas relativos a fun\c{c}\~oes racionais das ra{\'\i}zes duma equa\c{c}\~ao alg\'ebrica}, journal = {Portugaliae mathematica}, pages = {20--35}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1941}, mrnumber = {0004217}, zbl = {0024.28905}, language = {pt}, url = {http://geodesic.mathdoc.fr/item/PORMA_1941__2_1_114571/} }
Sebastião e Silva, J. Problemas relativos a funções racionais das raízes duma equação algébrica. Portugaliae mathematica, Tome 2 (1941) no. 1, pp. 20-35. http://geodesic.mathdoc.fr/item/PORMA_1941__2_1_114571/