@book { InstrumentedesSupplyChainControlling,
    title = "Instrumente des Supply Chain Controlling",
    author = "Olaf Eloy {Collin Marcos}",
    year = "2006",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638557979",
    url = "https://www.hausarbeiten.de/document/62583"
}