To cite the cordillera package in publications use:
Rusch T, Hornik K, Mair P (2018). “Assessing and quantifying clusteredness: The OPTICS Cordillera.” Journal of Computational and Graphical Statistics, 27(1), 220-233. doi:10.1080/10618600.2017.1349664.
Corresponding BibTeX entry:
@Article{, author = {Thomas Rusch and Kurt Hornik and Patrick Mair}, title = {Assessing and quantifying clusteredness: The {OPTICS} {C}ordillera}, journal = {Journal of Computational and Graphical Statistics}, number = {1}, volume = {27}, pages = {220-233}, year = {2018}, doi = {10.1080/10618600.2017.1349664}, }