@book { HeilkrfteausderKche,
    title = "Heilkräfte aus der Küche",
    author = "Roland {Possin}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403587"
}