@article{bwmeta1.element.bwnjournal-article-fmv115i1p5bwm,
author = {Juoko V\"a\"an\"anen},
title = {$\Delta$-extension and Hanf-numbers},
journal = {Fundamenta Mathematicae},
volume = {115},
year = {1983},
pages = {43-55},
zbl = {0522.03027},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv115i1p5bwm}
}
Väänänen, Juoko. Δ-extension and Hanf-numbers. Fundamenta Mathematicae, Tome 115 (1983) pp. 43-55. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv115i1p5bwm/