When using defm, always cite this paper:

Vega Yon GG, Valente TW, Pugh MJ (2022). Discrete Exponential-Family Models for Multivariate Binary Outcomes. arXiv:2211.00627. https://doi.org/10.48550/arXiv.2211.00627

And the R package itself:

Vega Yon G, Valente T, Pugh M (2026). defm: Estimation and Simulation of Multi-Binary Response Models. doi:10.32614/CRAN.package.defm. R package version 0.3.0.0, https://github.com/UofUEpiBio/defm.

Corresponding BibTeX entries:

  @Misc{,
    title = {Discrete Exponential-Family Models for Multivariate Binary
      Outcomes},
    author = {George {Vega Yon} and Thomas Valente and Mary Jo Pugh},
    year = {2022},
    publisher = {arXiv},
    doi = {10.48550/arXiv.2211.00627},
    url = {https://doi.org/10.48550/arXiv.2211.00627},
  }

  @Manual{,
    title = {{{defm: Estimation and Simulation of Multi-Binary Response
      Models}}},
    author = {George {Vega Yon} and Thomas Valente and Mary Jo Pugh},
    year = {2026},
    note = {R package version 0.3.0.0},
    url = {https://github.com/UofUEpiBio/defm},
    doi = {10.32614/CRAN.package.defm},
  }