@article{05825775,
title = {An overview of the lower and upper solutions method with nonlinear boundary value conditions.},
journal = {Boundary Value Problems [electronic only]},
volume = {2011},
year = {2011},
doi = {10.1155/2011/893753},
zbl = {1230.34001},
language = {en},
url = {http://dml.mathdoc.fr/item/05825775}
}
Cabada, Alberto. An overview of the lower and upper solutions method with nonlinear boundary value conditions.. Boundary Value Problems [electronic only], Tome 2011 (2011) . doi : 10.1155/2011/893753. http://gdmltest.u-ga.fr/item/05825775/