@book { Wasdarfichhoffen,
    title = "Was darf ich hoffen?",
    subtitle = "Besinnung auf das Fragwürdige unserer Zeit",
    author = "Armin {Baumgartner}",
    year = "1986",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1073608"
}