@book { UsabilitybeiWebApplikationen,
    title = "Usability bei Web-Applikationen",
    author = "Bettina {Thurnher}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832494926",
    url = "https://m.diplom.de/document/224623"
}