@article{anh_hai_hieu_2017,  title={The Equivalent Linearization Method with a Weighted Averaging for Analyzing of Nonlinear Vibrating Systems},  volume={14},  ISSN={1679-7825},  url={https://doi.org/10.1590/1679-78253488},  DOI={10.1590/1679-78253488},  number={9},  journal={Latin American Journal of Solids and Structures},  publisher={Individual owner},  author={Anh, N. D. and Hai, N. Q. and Hieu, D. V.},  year={2017},  month={Sep},  pages={1723–1740} }