@book { BayernundEuropa,
    title = "Bayern und Europa",
    author = "Konrad {Amann} and Ludolf {Pelizaeus} and Annette {Reese} and Helmut {Schmahl}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099384"
}