To cite dynmix package in publications use:

Drachal K (2020). dynmix: Estimation of dynamic finite mixtures. https://CRAN.R-project.org/package=dynmix.

Corresponding BibTeX entry:

  @Manual{,
    title = {{dynmix}: {E}stimation of dynamic finite mixtures},
    author = {Krzysztof Drachal},
    year = {2020},
    url = {https://CRAN.R-project.org/package=dynmix},
  }