Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1946__5_4_114642, author = {Santal\'o, L.A.}, title = {Sobre los cuerpos convexos de anchura constante en $E_n$}, journal = {Portugaliae mathematica}, pages = {195--201}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1946}, mrnumber = {0024644}, zbl = {0063.06712}, language = {es}, url = {http://geodesic.mathdoc.fr/item/PORMA_1946__5_4_114642/} }
Santaló, L.A. Sobre los cuerpos convexos de anchura constante en $E_n$. Portugaliae mathematica, Tome 5 (1946) no. 4, pp. 195-201. http://geodesic.mathdoc.fr/item/PORMA_1946__5_4_114642/