@article{bwmeta1.element.bwnjournal-article-fmv58i1p19bwm,
author = {Erik Ellentuck},
title = {Generalized idempotence in cardinal arithmetic},
journal = {Fundamenta Mathematicae},
volume = {58},
year = {1966},
pages = {241-258},
zbl = {0202.30702},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv58i1p19bwm}
}
Ellentuck, Erik. Generalized idempotence in cardinal arithmetic. Fundamenta Mathematicae, Tome 58 (1966) pp. 241-258. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv58i1p19bwm/