@article{MAN_1931__105_159518,
     author = {J. Horn},
     title = {Hypergeometrische {Funktionen} zweier {Ver\"anderlichen}},
     journal = {Mathematische Annalen},
     pages = {381--407},
     publisher = {mathdoc},
     volume = {105},
     year = {1931},
     zbl = {0002.34402},
     url = {http://geodesic.mathdoc.fr/item/MAN_1931__105_159518/}
}