To cite package ‘RFOC’ in publications use:

Lees J (2026). RFOC: Graphics for Spherical Distributions and Earthquake Focal Mechanisms. R package version 3.4-14, https://CRAN.R-project.org/package=RFOC.

Corresponding BibTeX entry:

  @Manual{,
    title = {RFOC: Graphics for Spherical Distributions and Earthquake
      Focal Mechanisms},
    author = {Jonathan M. Lees},
    year = {2026},
    note = {R package version 3.4-14},
    url = {https://CRAN.R-project.org/package=RFOC},
  }