(2006). On-time delivery, the competitive advantage. Retrieved from http://americanmachinist.com/uncategorized/time-delivery-competitive-advantageBalaji, L. N., & Kumar, S. (2013). How to reduce costs through supply chain network optimization. Retrieved from http://www.industryweek.com/planning-amp-forecasting/how-reduce-costs-through-supply-chain-network-optimization?page=1Hatch, J., & Zweig, J. (2001). Strategic flexibility: the key to growth. Retrieved from http://iveybusinessjournal.com/publication/strategic-flexibility-the-key-to-growth/Manktelow, J. (n.d.). Porter's generic strategies: choosing the path to success. Retrieved from http://www.mindtools.com/pages/article/newSTR_82.htmWaggoner, D., & Inman, A. R. (n.d.). Competitive advantage. Extracted from