@book { ManagementundSpitzensport,
    title = "Management und Spitzensport",
    subtitle = "Komparative Analyse",
    author = "Jürgen {Jelly}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471811",
    url = "https://m.diplom.de/document/222486"
}