@book { MinderheitenschutzinderEuropischenUnion,
    title = "Minderheitenschutz in der Europäischen Union",
    author = "Angela {Kaiser}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099260"
}