To cite package ‘DPTM’ in publications use:

  Hujie B (2024). _DPTM: Dynamic Panel Multiple Threshold Model with
  Fixed Effects_. R package version 1.6.0,
  <https://CRAN.R-project.org/package=DPTM>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {DPTM: Dynamic Panel Multiple Threshold Model with Fixed Effects},
    author = {Bai Hujie},
    year = {2024},
    note = {R package version 1.6.0},
    url = {https://CRAN.R-project.org/package=DPTM},
  }