@book { HarteZeitenfrCooleKickerBand2,
    title = "Harte Zeiten für Coole Kicker - Band 2",
    author = "Dieter {Winkler}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955203047",
    url = "https://m.dotbooks.de/document/229756"
}