@book { VisionenundHoffnungeninschwierigerZeit,
    title = "Visionen und Hoffnungen in schwieriger Zeit",
    author = "Lutz {Götze} and Claudia {Kupfer-Schreiner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106892"
}