@book { ControllingmitSAPERP,
    title = "Controlling mit SAP ERP",
    author = "Alexander {Baumeister} and Claudia {Floren} and Ulrike {Sträßer}",
    year = "2016",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220951"
}