@book { KonzeptioneinesKenntnistestsinderTheoriederSportartWindsurfen,
    title = "Konzeption eines Kenntnistests in der Theorie der Sportart Windsurfen",
    author = "Silja {Schröder}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832469917",
    url = "https://m.diplom.de/document/221738"
}