@book { DenKriegerklren,
    title = "Den Krieg erklären",
    author = "Natascha {Zowislo-Grünewald} and Jürgen {Schulz} and Detlef {Buch}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107922"
}