Maechler M, Rousseeuw P, Struyf A, Hubert M, Hornik K (2019). cluster: Cluster Analysis Basics and Extensions. R package version 2.1.0 — For new features, see the 'Changelog' file (in the package source).
@Manual{,
title = {cluster: Cluster Analysis Basics and Extensions},
author = {Martin Maechler and Peter Rousseeuw and Anja Struyf and Mia Hubert and Kurt Hornik},
year = {2019},
note = {R package version 2.1.0 --- For new features, see the 'Changelog' file (in the package source)},
}