@ARTICLE{
author={Brennan MJ,Gatti Gianluca,Kovacic Ivana N},
year={2020},
title={On rotating vectors, Jacobi elliptic functions and free vibration of the Duffing oscillator},
journal={INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS},
volume={126},
number={},
pages={-},
document_type={Article},
}