@article{05224745,
title = {A simultaneous system of functional inequalities and mappings which are weakly of a constant sign.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {8},
year = {2007},
zbl = {1142.39020},
language = {en},
url = {http://dml.mathdoc.fr/item/05224745}
}
Krassowska, Dorota; Matkowski, Janusz. A simultaneous system of functional inequalities and mappings which are weakly of a constant sign.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05224745/