@article{PORMA_1953__12_2_114713,
     author = {Pereira Gomes, A.},
     title = {Determination d'un },
     journal = {Portugaliae mathematica},
     pages = {49--56},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {1953},
     mrnumber = {0053694},
     zbl = {0050.19305},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1953__12_2_114713/}
}