@book { ConsumersBenefitderLiberalisierungdesTelekommunikationsmarktes,
    title = "Consumers Benefit der Liberalisierung des Telekommunikationsmarktes",
    author = "Ralf {Niederlaak}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832420826",
    url = "https://m.diplom.de/document/217917"
}