@article{MAN_1940__117_160060,
     author = {H. MAASS},
     title = {Zur {Theorie} der automorphen {Funktionen} von n {Ver\"anderlichen}},
     journal = {Mathematische Annalen},
     pages = {538--578},
     publisher = {mathdoc},
     volume = {117},
     year = {1940},
     zbl = {0023.22401},
     url = {http://geodesic.mathdoc.fr/item/MAN_1940__117_160060/}
}