To cite robustrao in publications use:

Calatrava Moreno, M.C. and Thomas A. (2016). robustrao: An R package to calculate the Rao-Stirling diversity index and its extension to acknowledge missing data.

Corresponding BibTeX entry:

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