@book { KrankheitenderHeimtiere,
    title = "Krankheiten der Heimtiere",
    author = "Prof. Dr. Michael {Fehr} and Dr. Lutz {Sassenburg} and Prof. Dr. Peernel {Zwart}",
    year = "2014",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403922"
}