To cite GD Package in publications use:

  Song Y, Wang J, Ge Y, Xu C (2020). “An optimal parameters-based
  geographical detector model enhances geographic characteristics of
  explanatory variables for spatial heterogeneity analysis: Cases with
  different types of spatial data.” _GIScience & Remote Sensing_, *57*,
  593-610. doi:10.1080/15481603.2020.1760434
  <https://doi.org/10.1080/15481603.2020.1760434>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {An optimal parameters-based geographical detector model enhances geographic characteristics of explanatory variables for spatial heterogeneity analysis: Cases with different types of spatial data},
    journal = {GIScience & Remote Sensing},
    volume = {57},
    pages = {593-610},
    year = {2020},
    author = {Yongze Song and Jinfeng Wang and Yong Ge and Chengdong Xu},
    doi = {10.1080/15481603.2020.1760434},
  }

  Wang J, Zhang T, Fu B (2016). “A measure of spatial stratified
  heterogeneity.” _Ecological Indicators_, *67*, 250-256.
  doi:10.1016/j.ecolind.2016.02.052
  <https://doi.org/10.1016/j.ecolind.2016.02.052>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {A measure of spatial stratified heterogeneity},
    journal = {Ecological Indicators},
    volume = {67},
    pages = {250-256},
    year = {2016},
    author = {Jinfeng Wang and Tonglin Zhang and Bojie Fu},
    doi = {10.1016/j.ecolind.2016.02.052},
  }

  Wang J, Li X, Christakos G, Liao Y, Zhang T, Gu X, Zheng X (2010).
  “Geographical Detectors-Based Health Risk Assessment and its
  Application in the Neural Tube Defects Study of the Heshun Region,
  China.” _International Journal of Geographical Information Science_,
  *24*(1), 107-127. doi:10.1080/13658810802443457
  <https://doi.org/10.1080/13658810802443457>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Geographical Detectors-Based Health Risk Assessment and its Application in the Neural Tube Defects Study of the Heshun Region, China},
    journal = {International Journal of Geographical Information Science},
    volume = {24},
    number = {1},
    pages = {107-127},
    year = {2010},
    author = {Jinfeng Wang and Xinhu Li and George Christakos and Yilan Liao and Tin Zhang and Xue Gu and Xiaoying Zheng},
    doi = {10.1080/13658810802443457},
  }