@book { DasdunkleLiedderTiefe,
    title = "Das dunkle Lied der Tiefe",
    subtitle = "Öko-Thriller",
    author = "Hanna {Riis}",
    year = "2015",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/305756"
}