To cite package ‘ef2’ in publications use:

  Millar C, Fryer R, Malcolm I, Glover R (2026). _ef2: Modelling
  Framework for the Estimation of Salmonid Abundance_. R package
  version 2.0.0, <https://github.com/faskally/ef2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ef2: Modelling Framework for the Estimation of Salmonid Abundance},
    author = {Colin Millar and Rob Fryer and Iain Malcolm and Ross Glover},
    year = {2026},
    note = {R package version 2.0.0},
    url = {https://github.com/faskally/ef2},
  }