1. NbClust: An R package for determining the relevant number of clusters in a data set;Charrad;Journal of Statistical Software,2014
2. A comprehensive survey of clustering algorithms: State-of-the-art machine learning applications, taxonomy, challenges, and future research prospects;Ezugwu;Eng. Appl. Artif. Intell.,2022
3. A k-means clustering algorithm;Hartigan;JSTOR: Applied Statistics,1979
4. Clustering methods for agent distribution optimization;Kubalík;IEEE Trans. Syst. Man Cybern. Part C,2010
5. OPC -From Data Access to Unifed Architecture;Lange,2010