@article{GDZPPN002370344, title = {Zur Analysis im Hilbertschen Raume}, journal = {Mathematische Zeitschrift}, volume = {28}, year = {1928}, pages = {451-470}, zbl = {54.0424.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002370344} }
Wintner, A.,. Zur Analysis im Hilbertschen Raume. Mathematische Zeitschrift, Tome 28 (1928) pp. 451-470. http://gdmltest.u-ga.fr/item/GDZPPN002370344/