To cite the transport package in publications use:

Müller R, Schuhmacher D (2021). ttbary: Barycenter Methods for Spatial Point Patterns. R package version 0.2-0, https://cran.r-project.org/package=transport.

Corresponding BibTeX entry:

  @Manual{,
    title = {{ttbary}: Barycenter Methods for Spatial Point Patterns},
    author = {Raoul Müller and Dominic Schuhmacher},
    year = {2021},
    note = {R package version 0.2-0},
    url = {https://cran.r-project.org/package=transport},
  }