To cite HSAR in publications use:

Anonymous (ed.) (2016). HSAR: An R Package for Integrated Spatial Econometric and Multilevel Modelling.

Corresponding BibTeX entry:

  @Proceedings{,
    title = {HSAR: An R Package for Integrated Spatial Econometric and
      Multilevel Modelling},
    author = {Guanpeng Dong and Richard Harris and Angelos Mimis},
    year = {2016},
    publisher = {GISRUK},
    institution = {University of Greenwich},
  }