To cite package 'prospectr' in publications use:

Antoine Stevens and Leornardo Ramirez-Lopez (2013). An introduction to the prospectr package. R package Vignette R package version 0.1.3.

Corresponding BibTeX entry:

  @Manual{,
    title = {An introduction to the prospectr package},
    author = {Antoine Stevens and Leornardo Ramirez-Lopez},
    publication = {R package Vignette},
    year = {2013},
    note = {R package version 0.1.3},
  }