@book { RichtigessenundtrinkennachderAdipositasOP,
    title = "Richtig essen und trinken nach der Adipositas-OP",
    author = "Dipl. Oec. Troph. Anne {Iburg}",
    year = "2024",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1463824"
}