1. Even periodic solutions of higher order duffing differential equations Creator: Wang, Genquiang and Cheng, Sui Sun Format: bez média and svazek Type: model:article and TEXT Subject: high order Duffing equation, even periodic solution, and continuation theorem Language: English Description: By using Mawhin’s continuation theorem, the existence of even solutions with minimum positive period for a class of higher order nonlinear Duffing differential equations is studied. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public