1. Richter, K., Witt, N.: Introduction. In: Richter, K., Walther, J. (eds.) Supply Chain Integration Challenges in Commercial Aerospace. Springer, Cham (2017). https://doi.org/10.1007/978-3-319-46155-7_1
2. Deloitte: Global Aerospace and Defence Sector Financial Performance Study (2016). http://www.defense-aerospace.com/articles-view/release/3/175856/deloitte-sees-growth-for-global-aerospace-and-defense-sector.html . Accessed Aug 2016
3. KPMG: The Future of Civil Aerospace, KPMG UK (2013). https://assets.kpmg.com/content/dam/kpmg/pdf/2013/06/the-future-of-civil-aerospace.pdf . Accessed May (2016)
4. PRN: Global Aerospace and Defence Industry to Grow Around 3%, PR Newswire, 12 February 2015
5. Airbus Annual Report (2016). http://annualreport.airbus.com/ . Accessed 22 Feb 2018