@article{MAN_1921__84_158895,
     author = {H. Kneser},
     title = {Untersuchungen zur {Quantentheorie}},
     journal = {Mathematische Annalen},
     pages = {277--302},
     year = {1921},
     volume = {84},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1921__84_158895/}
}