@article{RRACEFN_1983_1983_1_a17,
     author = {Reyes, Andr\'es},
     title = {Una caracterizaci\'on geom\'etrica de bases incondicionales.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     pages = {227-231},
     year = {1983},
     volume = {77},
     number = {1},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1983_1983_1_a17/}
}