@book { Comparisonandcontrastoftheoperationsstrategyoftwomanufacturingfirmswithtwoservicefirms,
    title = "Comparison and contrast of the operations strategy of two ‘manufacturing firms’ with two ‘service’ firms",
    author = "Markus {Baum}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656196006",
    url = "https://www.hausarbeiten.de/document/193738"
}