@article{bwmeta1.element.bwnjournal-article-cmv1i3p197bwm,
author = {Z. Butlewski},
title = {A proof that $e^m$ is irrational},
journal = {Colloquium Mathematicae},
volume = {1},
year = {1948},
pages = {197-198},
zbl = {0037.31501},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-cmv1i3p197bwm}
}
Butlewski, Z. A proof that $e^m$ is irrational. Colloquium Mathematicae, Tome 1 (1948) pp. 197-198. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-cmv1i3p197bwm/