@book { MercedesBenzDer190SLW121BII,
    title = "Mercedes-Benz, Der 190SL W121 BII",
    author = "Bernd {S. Koehling}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1489040"
}