@book { KinderundComputernetzeInternet,
    title = "Kinder und Computernetze (Internet)",
    author = "Regina Kathrin {Schumann}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832425661",
    url = "https://m.diplom.de/document/218358"
}