@article{bwmeta1.element.bwnjournal-article-fmv118i1p19bwm,
author = {Paul Bankston},
title = {Topological extensions and subspaces of $$\eta$\_$\alpha$$-sets},
journal = {Fundamenta Mathematicae},
volume = {115},
year = {1983},
pages = {191-199},
zbl = {0534.54003},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv118i1p19bwm}
}
Bankston, Paul. Topological extensions and subspaces of $η_α$-sets. Fundamenta Mathematicae, Tome 115 (1983) pp. 191-199. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv118i1p19bwm/