When using spd in publications, please cite:

To cite the spd package, please use:

Ghalanos A (2015). spd: Semi-Parametric Distribution.. R package version 2.0-1.

Corresponding BibTeX entry:

  @Manual{,
    title = {spd: Semi-Parametric Distribution.},
    author = {Alexios Ghalanos},
    year = {2015},
    note = {R package version 2.0-1.},
  }