TY - JOUR AU - Tiryaki, Aydin TI - Sturm-Picone type theorems for second-order nonlinear elliptic differential equations JO - Electronic journal of differential equations PY - 2014 VL - 2014 UR - http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a103/ LA - en ID - EJDE_2014__2014__a103 ER -