To cite spatialreg in publications use one or more of the following as appropriate:

Bivand R, Piras G (2015). “Comparing Implementations of Estimation Methods for Spatial Econometrics.” Journal of Statistical Software, 63(18), 1–36. https://www.jstatsoft.org/v63/i18/.

Bivand R, Hauke J, Kossowski T (2013). “Computing the Jacobian in Gaussian spatial autoregressive models: An illustrated comparison of available methods.” Geographical Analysis, 45(2), 150–179. https://doi.org/10.1111/gean.12008.

Bivand RS, Pebesma E, Gomez-Rubio V (2013). Applied spatial data analysis with R, Second edition. Springer, NY. https://asdar-book.org/.

Corresponding BibTeX entries:

  @Article{,
    title = {Comparing Implementations of Estimation Methods for
      Spatial Econometrics},
    author = {Roger Bivand and Gianfranco Piras},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {63},
    number = {18},
    pages = {1--36},
    url = {https://www.jstatsoft.org/v63/i18/},
  }
  @Article{,
    title = {Computing the Jacobian in Gaussian spatial autoregressive
      models: An illustrated comparison of available methods},
    author = {Roger Bivand and Jan Hauke and Tomasz Kossowski},
    journal = {Geographical Analysis},
    year = {2013},
    volume = {45},
    number = {2},
    pages = {150--179},
    url = {https://doi.org/10.1111/gean.12008},
  }
  @Book{,
    author = {Roger S. Bivand and Edzer Pebesma and Virgilio
      Gomez-Rubio},
    title = {Applied spatial data analysis with {R}, Second edition},
    year = {2013},
    publisher = {Springer, NY},
    url = {https://asdar-book.org/},
  }