@book { LeckerohneWeizen,
    title = "Lecker ohne ... Weizen",
    author = "Sabine {Offenborn} and Alexandra {Hirschfelder}",
    year = "2017",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403105"
}