To cite envi in publications, please use the following and include the version number and DOI:

Buller ID (2022). envi: Environmental Interpolation using Spatial Kernel Density Estimation, number 0.1.15. doi:10.5281/zenodo.5347826, https://cran.r-project.org/package=envi.

Corresponding BibTeX entry:

  @Manual{,
    title = {envi: Environmental Interpolation using Spatial Kernel
      Density Estimation},
    author = {Ian D. Buller},
    publisher = {The Comprehensive R Archive Network},
    year = {2022},
    number = {0.1.15},
    doi = {10.5281/zenodo.5347826},
    url = {https://cran.r-project.org/package=envi},
  }