To cite package ‘CARME’ in publications use:

  Gramatica M, Liverani S, Congdon P (2023). _CARME: CAR-MM Modelling
  in Stan_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=CARME>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CARME: CAR-MM Modelling in Stan},
    author = {Marco Gramatica and Silvia Liverani and Peter Congdon},
    year = {2023},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=CARME},
  }