@book { BusinessIntelligence,
    title = "Business Intelligence",
    author = "Jörg {Greitemeyer}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832453336",
    url = "https://m.diplom.de/document/220897"
}