@book { SupplyChainManagement,
    title = "Supply Chain Management",
    author = "Christina {Schröder}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640322213",
    url = "https://www.hausarbeiten.de/document/125803"
}