共 50 条
- [32] Canonical forms for systems of two second-order ordinary differential equations JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2001, 34 (13): : 2883 - 2911
- [34] ASYMPTOTICS OF SOLUTIONS OF NONAUTONOMOUS SECOND-ORDER ORDINARY DIFFERENTIAL EQUATIONS CLOSE TO LINEAR EQUATIONS NONLINEAR OSCILLATIONS, 2008, 11 (02): : 242 - 254
- [38] Existence and multiplicity of periodic solutions for a class of second-order ordinary differential equations Monatshefte für Mathematik, 2020, 193 : 829 - 843
- [39] Existence and multiplicity of periodic solutions for a class of second-order ordinary differential equations MONATSHEFTE FUR MATHEMATIK, 2020, 193 (04): : 829 - 843