中立型非线性泛函差分方程三个正周期解的存在性

刘兴元

Existence of Three Positive Periodic Solutions of Neutral Nonlinear Functional Difference Equations

LIU Xing-yuan

数学季刊 . 2015, (2): 172 -183 . DOI: 10.13371/j.cnki.chin.q.j.m.2015.02.003