%0 Journal Article %A Polášek, Vladimír %A Rachůnková, Irena %T Singular periodic problem for nonlinear ordinary differential equations with $\phi$-Laplacian %J Electronic Journal of Differential Equations %D 2006 %V 2006 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a79/ %G en %F EJDE_2006__2006__a79