@book { DerDienermeinerMutter,
    title = "Der Diener meiner Mutter",
    subtitle = "Erotischer Roman",
    author = "Roman {Eskersson}",
    year = "2020",
    publisher = "venusbooks",
    address = "München, Deutschland",
    url = "https://www.venusbooks.de/document/541589"
}