共 50 条
- [34] Existence of Three Positive Periodic Solutions of Differential Equations of Second Order RECENT ADVANCES IN APPLIED MATHEMATICS, 2009, : 174 - +
- [36] On existence of bounded positive solutions of higher order neutral differential equations Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences, 2000, 27 (02): : 11 - 16
- [37] POSITIVE SOLUTIONS OF THIRD ORDER DAMPED NONLINEAR DIFFERENTIAL EQUATIONS MATHEMATICA BOHEMICA, 2011, 136 (02): : 205 - 213
- [40] Existence of positive solutions of higher-order nonlinear neutral equations Journal of Inequalities and Applications, 2013