@article{01463184,
title = {On quasimonotone increasing systems of ordinary differential equations.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {57},
year = {2000},
pages = {35-43},
zbl = {0946.34006},
language = {en},
url = {http://dml.mathdoc.fr/item/01463184}
}
Herzog, G. On quasimonotone increasing systems of ordinary differential equations.. Portugaliae Mathematica. Nova Série, Tome 57 (2000) pp. 35-43. http://gdmltest.u-ga.fr/item/01463184/