@book { PraktischeAugenheilkundefrdenTierarzt,
    title = "Praktische Augenheilkunde für den Tierarzt",
    author = "Frans C. {Stades} and Willy {Neumann} and Michael {Boeve} and Dr. Bernhard M. {Spiess} and Milton {Wyman}",
    year = "2010",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403615"
}