@book { BranchenanalysederITEnterpriseManagementAnbieter,
    title = "Branchenanalyse der IT-Enterprise-Management Anbieter",
    author = "Ingo {Reinke}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832428327",
    url = "https://m.diplom.de/document/218560"
}