To cite tvgeom in publications use:

Landau VA, Zachmann LJ (2019). tvgeom: an R package for the time-varying geometric distribution. R package version 1.0.1, https://gitlab.com/actionable-phenology/tvgeom/.

Corresponding BibTeX entry:

  @Manual{,
    title = {tvgeom: an R package for the time-varying geometric
      distribution},
    author = {Vincent A. Landau and Luke J. Zachmann},
    year = {2019},
    note = {R package version 1.0.1},
    url = {https://gitlab.com/actionable-phenology/tvgeom/},
  }