@article{RRACEFN_1988_1988_1_a21,
     author = {L\'opez Acedo, Genaro},
     title = {Axiom\'atica para el grado multivaluado.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     pages = {249-255},
     year = {1988},
     volume = {82},
     number = {2},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1988_1988_1_a21/}
}