To cite package ‘mardist’ in publications use:

  Christidis P (2026). _mardist: Calculation of Maritime Distances_. R
  package version 1.1.1, <https://CRAN.R-project.org/package=mardist>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mardist: Calculation of Maritime Distances},
    author = {Panayotis Christidis},
    year = {2026},
    note = {R package version 1.1.1},
    url = {https://CRAN.R-project.org/package=mardist},
  }