@article{bwmeta1.element.bwnjournal-article-fmv30i1p29bwm,
author = {Edward Szpilrajn},
title = {On the equivalence of some classes of sets},
journal = {Fundamenta Mathematicae},
volume = {30},
year = {1938},
pages = {235-241},
zbl = {0018.39403},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv30i1p29bwm}
}
Szpilrajn, Edward. On the equivalence of some classes of sets. Fundamenta Mathematicae, Tome 30 (1938) pp. 235-241. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv30i1p29bwm/