To cite package ‘SpatPCA’ in publications use:

Wang W, Huang H (2025). SpatPCA: Regularized Principal Component Analysis for Spatial Data. R package version 1.3.8, https://CRAN.R-project.org/package=SpatPCA.

Corresponding BibTeX entry:

  @Manual{,
    title = {SpatPCA: Regularized Principal Component Analysis for
      Spatial Data},
    author = {Wen-Ting Wang and Hsin-Cheng Huang},
    year = {2025},
    note = {R package version 1.3.8},
    url = {https://CRAN.R-project.org/package=SpatPCA},
  }