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Existence and multiplicity of positive periodic solutions of ratio-dependent food chain model 期刊论文
Boundary Value Problems, 2016, 卷号: 2016, 期号: 1
作者:  Zeng,Zhijun
收藏  |  浏览/下载:103/0  |  提交时间:2018/07/30
coincidence degree  periodic solution  exploited term  ratio-dependent  34K13  92D25  
Sign-changing solutions for some nonlinear problems with strong resonance 期刊论文
Boundary Value Problems, 2011, 卷号: 2011, 期号: 1
作者:  Qian,Aixia
收藏  |  浏览/下载:94/0  |  提交时间:2018/07/30
critical point theory  strong resonance  index theory  Cerami condition