@article{MAN_1933__108_159643,
     author = {H. Petersson},
     title = {\"Uber die {Entwicklungskoeffizienten} einer allgemeinen {Klasse} automorpher {Formen}},
     journal = {Mathematische Annalen},
     pages = {370--377},
     publisher = {mathdoc},
     volume = {108},
     year = {1933},
     zbl = {59.0392.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__108_159643/}
}