To cite package ‘msy’ in publications use:

  Simmonds J, Hjorleifsson E, Millar C (2024). _msy: Estimation of
  Equilibrium Reference Points for Fsisheries_. R package version
  0.1.19, <https://github.com/ices-tools-prod/msy>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {msy: Estimation of Equilibrium Reference Points for Fsisheries},
    author = {John Simmonds and Einar Hjorleifsson and Colin Millar},
    year = {2024},
    note = {R package version 0.1.19},
    url = {https://github.com/ices-tools-prod/msy},
  }