@article{bwmeta1.element.bwnjournal-article-fmv112i1p11bwm,
author = {Helmut L\"anger},
title = {A generalization of a theorem of Skala},
journal = {Fundamenta Mathematicae},
volume = {112},
year = {1981},
pages = {121-123},
zbl = {0386.08004},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv112i1p11bwm}
}
Länger, Helmut. A generalization of a theorem of Skala. Fundamenta Mathematicae, Tome 112 (1981) pp. 121-123. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv112i1p11bwm/