%0 Journal Article %A Karakostas, George L. %T Nonexistence of solutions to some boundary-value problems for second-order ordinary differential equations %J Electronic Journal of Differential Equations %D 2012 %V 2012 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a25/ %G en %F EJDE_2012__2012__a25