@article{bwmeta1.element.bwnjournal-article-fmv52i1p19bwm,
author = {M. Kuczma},
title = {A characterization of the exponential and logarithmic functions by functional equations},
journal = {Fundamenta Mathematicae},
volume = {52},
year = {1963},
pages = {283-288},
zbl = {0126.12304},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv52i1p19bwm}
}
Kuczma, M. A characterization of the exponential and logarithmic functions by functional equations. Fundamenta Mathematicae, Tome 52 (1963) pp. 283-288. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv52i1p19bwm/