%0 Journal Article %A Alves, Maria J. %A Assuncao, Ronaldo B. %A Carriao, Paulo C. %A Miyagaki, Olimpio H. %T Existence of bound state solutions for degenerate singular perturbation problems with sign-changing potentials %J Electronic Journal of Differential Equations %D 2012 %V 2012 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a69/ %G en %F EJDE_2012__2012__a69