%0 Journal Article %A Tiryaki, Aydin %T Sturm-Picone type theorems for second-order nonlinear differential equations %J Electronic Journal of Differential Equations %D 2014 %V 2014 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a103/ %G en %F EJDE_2014__2014__a103