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@misc{MZ_1935__39_183590, title = {[unknown]}, journal = {Mathematische Zeitschrift}, pages = {583--589}, publisher = {mathdoc}, volume = {39}, year = {1935}, url = {http://geodesic.mathdoc.fr/item/MZ_1935__39_183590/} }
[unknown]. Mathematische Zeitschrift, Tome 39 (1935), pp. 583-589. http://geodesic.mathdoc.fr/item/MZ_1935__39_183590/