@book { SupplyChainManagementEinberblick,
    title = "Supply Chain Management - Ein Überblick",
    author = "Thomas {Rohrmeier}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638982733",
    url = "https://www.hausarbeiten.de/document/99837"
}