共 50 条
- [32] Existence of periodic solutions and bifurcation points for generalized ordinary differential equations BULLETIN DES SCIENCES MATHEMATIQUES, 2021, 169
- [33] Existence of Periodic Solutions for a Class of Second Order Ordinary Differential Equations Acta Applicandae Mathematicae, 2020, 169 : 193 - 197
- [35] Existence of 2π-periodic solutions for nonlinear systems of first-order ordinary differential equations at resonance Nonlinear Anal Theory Methods Appl, 1 (01):
- [37] The existence of periodic solutions for a class of nonlinear functional differential equations Applications of Mathematics, 2008, 53 : 97 - 103
- [39] ON THE EXISTENCE OF BOUNDED SOLUTIONS FOR SYSTEMS OF NONLINEAR GENERALIZED ORDINARY DIFFERENTIAL EQUATIONS MEMOIRS ON DIFFERENTIAL EQUATIONS AND MATHEMATICAL PHYSICS, 2008, 45 : 125 - 130
- [40] Oscillatory Periodic Solutions of Nonlinear Second Order Ordinary Differential Equations Acta Mathematica Sinica, 2005, 21 : 491 - 496