@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/