@article{MAN_1940__117_160056,
     author = {J. Horn},
     title = {\"Uber hypergeometrische {Funktionen} zweier {Ver\"anderlichen}},
     journal = {Mathematische Annalen},
     pages = {384--414},
     publisher = {mathdoc},
     volume = {117},
     year = {1940},
     zbl = {0023.31501},
     url = {http://geodesic.mathdoc.fr/item/MAN_1940__117_160056/}
}