@article{RRACEFN_1980_1980_1_a31,
     author = {Valdivia, Manuel},
     title = {Espacios de funciones ultradiferenciables.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     year = {1980},
     volume = {74},
     number = {5},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1980_1980_1_a31/}
}