@book { PersonalisierungimWeb,
    title = "Personalisierung im Web",
    author = "Jens {Zeidler}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842812796",
    url = "https://m.diplom.de/document/228441"
}