@book { DermobileTelekommunikationssektorChinas,
    title = "Der mobile Telekommunikationssektor Chinas",
    author = "Matthias {Junghänel}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Germany",
    doi = "10.3239/9783832420604",
    url = "https://m.diplom.de/document/217852"
}