Periodic Solutions for Nonlinearnth Order Ordinary Differential Equations
作 者：
Zhaoli Liu;
出版年：1996
页 码：46 - 64
出版社：Elsevier BV
摘 要：
Existence of @w-periodic solutions ofnth order ordinary differential equations with nonlinear restoring termh(x) and time-variable coefficients is studied without the assumption of boundedness ofh(x) andh'(x).
