@book { AktivityBasedCostingundProzekostenrechnung,
    title = "Aktivity-Based Costing und Prozeßkostenrechnung",
    author = "Franz W. {Kellermanns}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832435868",
    url = "https://m.diplom.de/document/219243"
}