1. W B du Preez, JOM, 71, 655–661 (2019).
2. D. de Beer, W. du Preez, H. Greyling, F. Prinsloo, F. Sciammarella, N. Trollip, M. Vermeulen, with contributions from Terry Wohlers, “A South African Additive Manufacturing Strategy”, Department of Science and Technology, April 2016, http://www.rapdasa.org/wp-content/uploads/2017/02/South-African-Additive-Manufacturing-Strategy. Accessed 3 April 2019.
3. South Africa Medical Devices Report, Q2, www.fitchsolutions.com (2019).
4. L. Bezuidenhout, G. Booysen and A.F. van der Merwe,. Emerging technologies: Commercial Readiness Index (CRI) for medical additive manufacturing (AM) (2017).
5. ARENA, “Commercial Readiness Index for Renewable Energy Sectors” (2014).