To cite package ‘spm2’ in publications use:

Li J (2023). spm2: Spatial Predictive Modeling. R package version 1.1.3, https://CRAN.R-project.org/package=spm2.

Corresponding BibTeX entry:

  @Manual{,
    title = {spm2: Spatial Predictive Modeling},
    author = {Jin Li},
    year = {2023},
    note = {R package version 1.1.3},
    url = {https://CRAN.R-project.org/package=spm2},
  }