@book { EinsatzmglichkeitenvonBusinessIntelligenceimoperativenControlling,
    title = "Einsatzmöglichkeiten von Business Intelligence im operativen Controlling",
    author = "Christian {Handler}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/285816"
}