@book { MonetizingWeb20,
    title = "Monetizing Web 2.0",
    author = "Dirk {Schubert}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836612807",
    url = "https://m.diplom.de/document/225768"
}