@article{bwmeta1.element.bwnjournal-article-smv7i1p15bwm, author = {J. Schreier}, title = {Eine Eigenschaft abstrakter Mengen}, journal = {Studia Mathematica}, volume = {7}, year = {1938}, pages = {155-156}, language = {de}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv7i1p15bwm} }
Schreier, J. Eine Eigenschaft abstrakter Mengen. Studia Mathematica, Tome 7 (1938) pp. 155-156. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv7i1p15bwm/