@book { DieHoffnungderKrankenundSterbenden,
    title = "Die Hoffnung der Kranken und Sterbenden",
    author = "Gerhard {Hemker}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/223608"
}