To cite package ‘flexmix’ in publications use:

  Gruen B, Leisch F (2023). _flexmix: Flexible Mixture Modeling_. R
  package version 2.3-19, <https://CRAN.R-project.org/package=flexmix>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {flexmix: Flexible Mixture Modeling},
    author = {Bettina Gruen and Friedrich Leisch},
    year = {2023},
    note = {R package version 2.3-19},
    url = {https://CRAN.R-project.org/package=flexmix},
  }

  Leisch F (2004). “FlexMix: A General Framework for Finite Mixture
  Models and Latent Class Regression in R.” _Journal of Statistical
  Software_, *11*(8), 1-18. doi:10.18637/jss.v011.i08
  <https://doi.org/10.18637/jss.v011.i08>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{FlexMix}: A General Framework for Finite Mixture Models and Latent Class Regression in {R}},
    author = {Friedrich Leisch},
    journal = {Journal of Statistical Software},
    year = {2004},
    volume = {11},
    number = {8},
    pages = {1--18},
    doi = {10.18637/jss.v011.i08},
  }

  Grün B, Leisch F (2007). “Fitting Finite Mixtures of Generalized
  Linear Regressions in R.” _Computational Statistics & Data Analysis_,
  *51*(11), 5247-5252. doi:10.1016/j.csda.2006.08.014
  <https://doi.org/10.1016/j.csda.2006.08.014>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Fitting Finite Mixtures of Generalized Linear Regressions in {R}},
    author = {Bettina Gr\"un and Friedrich Leisch},
    journal = {Computational Statistics \& Data Analysis},
    year = {2007},
    volume = {51},
    number = {11},
    pages = {5247--5252},
    doi = {10.1016/j.csda.2006.08.014},
  }

  Grün B, Leisch F (2008). “FlexMix Version 2: Finite Mixtures with
  Concomitant Variables and Varying and Constant Parameters.” _Journal
  of Statistical Software_, *28*(4), 1-35. doi:10.18637/jss.v028.i04
  <https://doi.org/10.18637/jss.v028.i04>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{FlexMix} Version 2: Finite Mixtures with Concomitant Variables and Varying and Constant Parameters},
    author = {Bettina Gr\"un and Friedrich Leisch},
    journal = {Journal of Statistical Software},
    year = {2008},
    volume = {28},
    number = {4},
    pages = {1--35},
    doi = {10.18637/jss.v028.i04},
  }