@book { DieEntwicklungderFIFAunterPrsidentHavelange,
    title = "Die Entwicklung der FIFA unter Präsident Havelange",
    author = "Rainer {Schlösser}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832457969",
    url = "https://m.diplom.de/document/221264"
}