To cite the R package cluster in publications use:
Maechler M, Rousseeuw P, Struyf A, Hubert M, Hornik K (2023). cluster: Cluster Analysis Basics and Extensions. R package version 2.1.6 — For new features, see the 'NEWS' and the 'Changelog' file in the package source), https://CRAN.R-project.org/package=cluster.
Corresponding BibTeX entry:
@Manual{, title = {cluster: Cluster Analysis Basics and Extensions}, author = {Martin Maechler and Peter Rousseeuw and Anja Struyf and Mia Hubert and Kurt Hornik}, year = {2023}, url = {https://CRAN.R-project.org/package=cluster}, note = {R package version 2.1.6 --- For new features, see the 'NEWS' and the 'Changelog' file in the package source)}, }