@book { MarktbersichtderOpenSourceBusinessIntelligenceSysteme,
    title = "Marktübersicht der Open Source Business Intelligence Systeme",
    author = "Sören {Stuckenbrock}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836636483",
    url = "https://m.diplom.de/document/227236"
}