共 50 条
- [21] Existence and multiplicity of periodic solutions generated by impulses ADVANCES IN DIFFERENCE EQUATIONS, 2013,
- [23] Existence and multiplicity of periodic solutions generated by impulses Advances in Difference Equations, 2013
- [30] Existence, uniqueness and positivity of solutions for a neutral nonlinear periodic differential equation COMPUTATIONAL & APPLIED MATHEMATICS, 2015, 34 (01): : 17 - 27