@article{05888139,
title = {Existence and multiplicity of solutions for a periodic Hill's equation with parametric dependence and singularities.},
journal = {Abstract and Applied Analysis},
volume = {2011},
year = {2011},
doi = {10.1155/2011/545264},
zbl = {1229.34034},
language = {en},
url = {http://dml.mathdoc.fr/item/05888139}
}
Cabada, Alberto; Cid, José Ángel. Existence and multiplicity of solutions for a periodic Hill's equation with parametric dependence and singularities.. Abstract and Applied Analysis, Tome 2011 (2011) . doi : 10.1155/2011/545264. http://gdmltest.u-ga.fr/item/05888139/