@book { PatenteundVentureCapital,
    title = "Patente und Venture Capital",
    author = "Denise {Beyer}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836627887",
    url = "https://m.diplom.de/document/226683"
}