1. ASTM F2792-12, Standard Terminology for Additive Manufacturing Technologies (2012)
2. T. Wohlers, Wohler’s Report 2012: Additive Manufacturing and 3D Printing State of the Industry (Fort Collins, CO: Wohlers Associates Inc., 2012).
3. BBC, Transplant jaw made by 3D printer claimed as first. (2012), http://www.bbc.co.uk/news/technology-16907104
4. GE Reports, Fit to print: New plant will assemble world’s first passenger jet engine with 3D printed fuel nozzles, next-gen materials. (2014), http://www.gereports.com/post/80701924024/fit-to-print
5. T. Wohlers and T. Caffrey, Additive manufacturing: Going mainstream. (2013), https://www1.eere.energy.gov/manufacturing/pdfs/sme_man_engineering.pdf