@book { AnalyseeinerVoiceOverIPLsungundEntwurfvonTestszenarien,
    title = "Analyse einer Voice Over IP-Lösung und Entwurf von Testszenarien",
    author = "Andreas {Bergmann}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832447427",
    url = "https://m.diplom.de/document/220340"
}