@book { DemonstrationstafelnfrdieKleintierpraxisChirurgie,
    title = "Demonstrationstafeln für die Kleintierpraxis. Chirurgie",
    author = "",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403770"
}