@article{GDZPPN00227745X,
title = {Zur Theorie linearer Operatoren},
journal = {Mathematische Annalen},
volume = {111},
year = {1935},
pages = {722-725},
language = {de},
url = {http://dml.mathdoc.fr/item/GDZPPN00227745X}
}
Wecken, F.J. Zur Theorie linearer Operatoren. Mathematische Annalen, Tome 111 (1935) pp. 722-725. http://gdmltest.u-ga.fr/item/GDZPPN00227745X/