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2. Arkell, D. (2003), “built-in quality”, 02(03), available at: www.boeing.com/news/frontiers/archive/2003/july/i_ca1.html
3. Arkell, D. (2005), “The evolution of creation”, pp. 2-7, available at: www.boeing.com/news/frontiers/archive/2005/march/mainfeature1.htm
4. A proper framework for design of aircraft production system based on lean manufacturing principles focusing to automated processes;The International Journal of Advanced Manufacturing Technology,2014
5. Boeing (2020), “Boeing overview”, Corporate overview pdf, p. 14, available at: www.boeing.com/resources/boeingdotcom/company/general_info/pdf/boeing_overview.pdf