@article{bwmeta1.element.bwnjournal-article-apmv3i1p157bwm,
author = {Mlak, W.},
title = {The epidermic effect for differential inequalities of the first order},
journal = {Annales Polonici Mathematici},
volume = {3},
year = {1956},
pages = {157-164},
zbl = {0070.31002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv3i1p157bwm}
}
Mlak, W. The epidermic effect for differential inequalities of the first order. Annales Polonici Mathematici, Tome 3 (1956) pp. 157-164. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv3i1p157bwm/