1. Oscillation theorems for differential equations involving even order nonlinear Sturm–Liouville operator;Tanigawa;Georgian Math. J.,2007
2. Existence of positive solutions of higher-order quasilinear ordinary differential equations;Naito;Ann. Mat. Pura Appl.,2007
3. Existence and asymptotic behavior of positive solutions of higher-order quasilinear ordinary differential equations;Naito;Math. Nachr.,2006
4. Oscillation criteria for a class of higher order nonlinear differential equations;Tanigawa;Mem. Differential Equations Math. Phys.,2006
5. Oscillation theorems for fourth-order quasilinear ordinary differential equations;Kamo;Studia Sci. Math. Hungar.,2002