@book { ProjektundRessourcencontrollingmitSAPBWBI,
    title = "Projekt- und Ressourcencontrolling mit SAP BW/BI",
    author = "Aleksej {Busch}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638690430",
    url = "https://www.hausarbeiten.de/document/75073"
}