@book { DieLebensweltderDDR,
    title = "Die Lebenswelt der DDR",
    subtitle = "Im Spiegel der Filme des DEFA-Dokumentaristen Jürgen Böttcher",
    author = "Falko {Seidel}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/224802"
}