To cite package 'secrfunc' in publications use:

Efford, M. G. (2026). secrfunc: Helper Functions for Package 'secr' R package version 1.1.5.

Corresponding BibTeX entry:

  @Manual{,
    title = {secrfunc: Helper Functions for Package 'secr'},
    author = {Murray Efford},
    year = {2026},
    note = {R package version 1.1.5},
  }