@book { DieZinsschrankeimKonzern,
    title = "Die Zinsschranke im Konzern",
    author = "Kai {Schwoon}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836616539",
    url = "https://m.diplom.de/document/225982"
}