@book { DasGrandHotelanderOstsee,
    title = "Das Grand Hotel an der Ostsee",
    subtitle = "Roman",
    author = "Christine {Lehmann}",
    year = "2021",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/284572"
}