@book { HarteZeitenfrCooleKickerBand2,
    title = "Harte Zeiten für Coole Kicker - Band 2",
    author = "Dieter {Winkler}",
    year = "2016",
    publisher = "jumpbooks",
    address = "München, Deutschland",
    url = "https://m.jumpbooks.de/document/318488"
}