@book { KampfdenFeindenoderSchutzderMinderheiten,
    title = "Kampf den Feinden oder Schutz der Minderheiten?",
    author = "Felix {Fleckenstein}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b12648",
    url = "https://www.peterlang.com/document/1056420"
}