Approximate periodic solutions for the Helmholtz-Duffing equation

Hassan Askari, Zia Saadatnia, Davood Younesian, Ahmet Yildirim, M. Kalami Yazdi. Approximate periodic solutions for the Helmholtz-Duffing equation. Computers & Mathematics with Applications, 62(10):3894-3901, 2011. [doi]

Abstract

Abstract is missing.