共 50 条
- [2] Modified Kantorovich theorem and asymptotic approximations of solutions to singularly perturbed systems of ordinary differential equations Computational Mathematics and Mathematical Physics, 2016, 56 : 1859 - 1871
- [8] Periodic solutions of singularly perturbed nonlinear differential equations with symmetries DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS-SERIES A-MATHEMATICAL ANALYSIS, 2001, 8 (03): : 305 - 333
- [9] Bounds for the Periods of Periodic Solutions of Ordinary Differential Equations Ukrainian Mathematical Journal, 2016, 67 : 1773 - 1777