@article{PORMA_1949__8_4_114682,
     author = {Santal\'o, L.A.},
     title = {Un invariante afin para los cuerpos convexos del espacio de n dimensiones},
     journal = {Portugaliae mathematica},
     pages = {155--161},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {1949},
     mrnumber = {0039293},
     zbl = {0038.35702},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1949__8_4_114682/}
}