To cite bifrost in publications, please cite the package paper first listed below and the other references as appropriate. Because bifrost relies on mvMORPH and its penalized-likelihood framework, please also cite the mvMORPH references below.

Berv JS, Fox N, Thorstensen MJ, Lloyd-Laney H, Troyer EM, Rivero-Vega RA, Smith SA, Friedman M, Fouhey DF, Weeks BC (2026). “bifrost: an R package for scalable inference of phylogenetic shifts in multivariate evolutionary dynamics.” Methods in Ecology and Evolution. In press. Preprint: https://doi.org/10.64898/2026.04.12.718036.

Berv JS, Probst CM, Claramunt S, Shipley JR, Friedman M, Smith SA, Fouhey DF, Weeks BC (2026). “Rates of passerine body plan evolution in time and space.” Nature Ecology & Evolution, 10, 1559–1573. doi:10.1038/s41559-026-03110-5. https://www.nature.com/articles/s41559-026-03110-5.

Clavel J, Escarguel G, Merceron G (2015). “mvmorph: an R package for fitting multivariate evolutionary models to morphometric data.” Methods in Ecology and Evolution, 6(11), 1311–1319. doi:10.1111/2041-210X.12420.

Clavel J, Aristide L, Morlon H (2019). “A Penalized Likelihood Framework for High-Dimensional Phylogenetic Comparative Methods and an Application to New-World Monkeys Brain Evolution.” Systematic Biology, 68(1), 93–116. doi:10.1093/sysbio/syy045.

Corresponding BibTeX entries:

  @Article{,
    title = {bifrost: an R package for scalable inference of
      phylogenetic shifts in multivariate evolutionary dynamics},
    author = {Jacob S. Berv and Nathan Fox and Matt J. Thorstensen and
      Henry Lloyd-Laney and Emily M. Troyer and Rafael A. Rivero-Vega
      and Stephen A. Smith and Matt Friedman and David F. Fouhey and
      Brian C. Weeks},
    year = {2026},
    journal = {Methods in Ecology and Evolution},
    note = {In press. Preprint:
      https://doi.org/10.64898/2026.04.12.718036},
  }

  @Article{,
    title = {Rates of passerine body plan evolution in time and space},
    author = {Jacob S. Berv and Charlotte M. Probst and Santiago
      Claramunt and J. Ryan Shipley and Matt Friedman and Stephen A.
      Smith and David F. Fouhey and Brian C. Weeks},
    year = {2026},
    journal = {Nature Ecology & Evolution},
    volume = {10},
    pages = {1559--1573},
    doi = {10.1038/s41559-026-03110-5},
    url = {https://www.nature.com/articles/s41559-026-03110-5},
  }

  @Article{,
    title = {mvmorph: an R package for fitting multivariate
      evolutionary models to morphometric data},
    author = {Julien Clavel and Gilles Escarguel and Gildas Merceron},
    year = {2015},
    journal = {Methods in Ecology and Evolution},
    volume = {6},
    number = {11},
    pages = {1311--1319},
    doi = {10.1111/2041-210X.12420},
  }

  @Article{,
    title = {A Penalized Likelihood Framework for High-Dimensional
      Phylogenetic Comparative Methods and an Application to New-World
      Monkeys Brain Evolution},
    author = {Julien Clavel and Leandro Aristide and Hélène Morlon},
    year = {2019},
    journal = {Systematic Biology},
    volume = {68},
    number = {1},
    pages = {93--116},
    doi = {10.1093/sysbio/syy045},
  }