@article{RRACEFN_1984_1984_1_a27,
     author = {Rod\'es Usan, Alvaro A.},
     title = {Una caracterizaci\'on de los operadores de {Fredholm} y {semi-Fredholm.}},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales },
     publisher = {mathdoc},
     volume = {78},
     number = {4},
     year = {1984},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1984_1984_1_a27/}
}