To cite the package:

Pérez-Goya U, Montesino-SanMartin M, Militino AF, Ugarte MD (2020). RGISTools: Handling Multiplatform Satellite Images. R package version 1.0.0, https://CRAN.R-project.org/package=RGISTools.

To cite the gap filling method implemented in the function genSmoothingIMA:

Militino AF, Ugarte MD, Pérez-Goya U, Genton MG (2019). “Interpolation of the Mean Anomalies for Cloud-Filling in Land Surface Temperature and Normalized Difference Vegetation Index.” IEEE Transactions on Geoscience and Remote Sensing, 57(8), 6068–6078. http://dx.doi.org/10.1109/TGRS.2019.2904193.

To cite the smoothing method implemented in the function genSmoothingCovIMA:

Militino AF, Ugarte MD, Pérez-Goya U (2018). “Improving the Quality of Satellite Imagery Based on Ground-Truth Data from Rain Gauge Stations.” Remote Sensing, 10(398), 1–16. http://dx.doi.org/10.3390/rs10030398.

Corresponding BibTeX entries:

  @Manual{,
    title = {RGISTools: Handling Multiplatform Satellite Images},
    author = {U P{\'e}rez-Goya and M Montesino-SanMartin and A F
      Militino and M D Ugarte},
    year = {2020},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=RGISTools},
  }

  @Article{,
    title = {Interpolation of the Mean Anomalies for Cloud-Filling in
      Land Surface Temperature and Normalized Difference Vegetation
      Index},
    author = {A F Militino and M D Ugarte and U P{\'e}rez-Goya and M G
      Genton},
    journal = {IEEE Transactions on Geoscience and Remote Sensing},
    year = {2019},
    volume = {57},
    number = {8},
    pages = {6068--6078},
    url = {http://dx.doi.org/10.1109/TGRS.2019.2904193},
  }

  @Article{,
    title = {Improving the Quality of Satellite Imagery Based on
      Ground-Truth Data from Rain Gauge Stations},
    author = {A F Militino and M D Ugarte and U P{\'e}rez-Goya},
    journal = {Remote Sensing},
    year = {2018},
    volume = {10},
    number = {398},
    pages = {1--16},
    url = {http://dx.doi.org/10.3390/rs10030398},
  }