@book { WebundOLAPbasierteControllingSysteme,
    title = "Web- und OLAP-basierte Controlling-Systeme",
    author = "Günther {Auer}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832483258",
    url = "https://m.diplom.de/document/223519"
}