To cite plfm in publications use:

Meulders M (2013). “An R Package for Probabilistic Latent Feature Analysis of Two-Way Two-Mode Frequencies.” Journal of Statistical Software, 54(14), 1–29. doi:10.18637/jss.v054.i14.

Meulders M, De Bruecker P (2018). “Latent Class Probabilistic Latent Feature Analysis of Three-Way Three-Mode Binary Data.” Journal of Statistical Software, 87(1), 1–45. doi:10.18637/jss.v087.i01.

Corresponding BibTeX entries:

  @Article{,
    title = {An {R} Package for Probabilistic Latent Feature Analysis
      of Two-Way Two-Mode Frequencies},
    author = {Michel Meulders},
    journal = {Journal of Statistical Software},
    year = {2013},
    volume = {54},
    number = {14},
    pages = {1--29},
    doi = {10.18637/jss.v054.i14},
  }

  @Article{,
    title = {Latent Class Probabilistic Latent Feature Analysis of
      Three-Way Three-Mode Binary Data},
    author = {Michel Meulders and Philippe {De Bruecker}},
    journal = {Journal of Statistical Software},
    year = {2018},
    volume = {87},
    number = {1},
    pages = {1--45},
    doi = {10.18637/jss.v087.i01},
  }