@article{bwmeta1.element.bwnjournal-article-fmv59i1p20bwm,
author = {Tadeusz \'Swi\k atkowski},
title = {On the conditions of monotonicity of functions},
journal = {Fundamenta Mathematicae},
volume = {58},
year = {1966},
pages = {189-201},
zbl = {0143.07406},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv59i1p20bwm}
}
Świątkowski, Tadeusz. On the conditions of monotonicity of functions. Fundamenta Mathematicae, Tome 58 (1966) pp. 189-201. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv59i1p20bwm/