@article{bwmeta1.element.bwnjournal-article-smv47i1p13bwm,
author = {Ed Dubinsky and W. Robinson},
title = {A characterization of $\omega$ by block extensions},
journal = {Studia Mathematica},
volume = {48},
year = {1973},
pages = {153-159},
zbl = {0266.46011},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv47i1p13bwm}
}
Dubinsky, Ed; Robinson, W. A characterization of ω by block extensions. Studia Mathematica, Tome 48 (1973) pp. 153-159. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv47i1p13bwm/