@article{PORMA_1958__17_4_114805,
     author = {Veloso, Maria Joana and Veloso, Eduardo},
     title = {Sur la notion de d\'eriv\'ee en points fronti\`eres dans des espaces localement convexes},
     journal = {Portugaliae mathematica},
     pages = {107--122},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1958},
     mrnumber = {0104171},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1958__17_4_114805/}
}