@book { KommunalesKrisenmanagement,
    title = "Kommunales Krisenmanagement",
    author = "Alexander {Spermann}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13828",
    url = "https://www.peterlang.com/document/1068405"
}