To cite robustrao in publications use:

Moreno MdCC, Auzinger T (2016). robustrao: An Extended Rao-Stirling Diversity Index to Handle Missing Data.

Corresponding BibTeX entry:

  @Manual{,
    title = {robustrao: An Extended Rao-Stirling Diversity Index to
      Handle Missing Data},
    author = {María del Carmen Calatrava Moreno and Thomas Auzinger},
    year = {2016},
  }