To cite package 'ipsecr' in publications use:

Efford M (2025). ipsecr: Spatially explicit capture-recapture using inverse prediction. R package version 1.4.4, https://CRAN.R-project.org/package=ipsecr.

Corresponding BibTeX entry:

  @Manual{,
    title = {ipsecr: Spatially explicit capture-recapture using inverse
      prediction},
    author = {Murray Efford},
    year = {2025},
    note = {R package version 1.4.4},
    url = {https://CRAN.R-project.org/package=ipsecr},
  }