共 50 条
- [14] Existence of nontrivial solutions for a nonlinear second order periodic boundary value problem with derivative term Journal of Fixed Point Theory and Applications, 2020, 22
- [15] Existence of n positive solutions to a nonlinear second-order periodic boundary value problem Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science), 2009, 33 (04): : 175 - 178
- [18] Periodic solutions of second order boundary value problems with impulses DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS-SERIES A-MATHEMATICAL ANALYSIS, 2002, 9 (03): : 397 - 416