To cite package 'hsdar' in publications use:

Lukas W. Lehnert, Hanna Meyer, Joerg Bendix (2018). hsdar: Manage, analyse and simulate hyperspectral data in R. R package version 0.7.1.

Corresponding BibTeX entry:

  @Manual{,
    title = {hsdar: Manage, analyse and simulate hyperspectral data in
      R},
    author = {Lukas W. Lehnert and Hanna Meyer and J\"{o}rg Bendix},
    year = {2018},
    note = {R package version 0.7.1},
  }