@book { ClusteranalysefrNetzwerke,
    title = "Clusteranalyse für Netzwerke",
    author = "Alexandra Rebecca {Klages}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01435-8",
    url = "https://www.peterlang.com/document/1047267"
}