@book { FriedenWissenschaftZukunft21,
    title = "Frieden, Wissenschaft, Zukunft 21",
    author = "Werner {Mittelstaedt}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090057"
}