@book { DennewigwhrtdieSchuld,
    title = "Denn ewig währt die Schuld",
    author = "Robert {Goddard} and Peter {Pfaffinger}",
    year = "2019",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/509827"
}