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@article{MAN_1933__108_159631, author = {H. GRUNSKY}, title = {Einige {Analoga} zum {Schwarzschen} {Lemma}}, journal = {Mathematische Annalen}, pages = {190--196}, publisher = {mathdoc}, volume = {108}, year = {1933}, zbl = {0006.26203}, url = {http://geodesic.mathdoc.fr/item/MAN_1933__108_159631/} }
H. GRUNSKY. Einige Analoga zum Schwarzschen Lemma. Mathematische Annalen, Tome 108 (1933), pp. 190-196. http://geodesic.mathdoc.fr/item/MAN_1933__108_159631/