To cite package ‘flexmet’ in publications use:

Feuerstahler L (2021). flexmet: Flexible Latent Trait Metrics using the Filtered Monotonic Polynomial Item Response Model. R package version 1.1, https://github.com/leahfeuerstahler/flexmet.

Corresponding BibTeX entry:

  @Manual{,
    title = {flexmet: Flexible Latent Trait Metrics using the Filtered
      Monotonic Polynomial Item Response Model},
    author = {Leah Feuerstahler},
    year = {2021},
    note = {R package version 1.1},
    url = {https://github.com/leahfeuerstahler/flexmet},
  }