To cite package ‘deform’ in publications use:

  Youngman B (2023). _deform: Spatial Deformation and Dimension
  Expansion Gaussian Processes_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=deform>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {deform: Spatial Deformation and Dimension Expansion Gaussian Processes},
    author = {Ben Youngman},
    year = {2023},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=deform},
  }