@book { OutsourcingMglichkeitenfrBusinessIntelligenceKonzepte,
    title = "Outsourcing Möglichkeiten für Business Intelligence Konzepte",
    author = "Robert {Ruf}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/283312"
}