Extended framework of Hamilton's principle applied to Duffing oscillation

Jinkyu Kim, Hyeonseok Lee, Jinwon Shin. Extended framework of Hamilton's principle applied to Duffing oscillation. Applied Mathematics and Computation, 367, 2020. [doi]

@article{KimLS20,
  title = {Extended framework of Hamilton's principle applied to Duffing oscillation},
  author = {Jinkyu Kim and Hyeonseok Lee and Jinwon Shin},
  year = {2020},
  doi = {10.1016/j.amc.2019.124762},
  url = {https://doi.org/10.1016/j.amc.2019.124762},
  researchr = {https://researchr.org/publication/KimLS20},
  cites = {0},
  citedby = {0},
  journal = {Applied Mathematics and Computation},
  volume = {367},
}