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2. Niki Werkheiser. “NASA Additive Manufacturing Overview”. Military Additive Manufacturing Summit, February 7-8, (2017), Tampa, FL
3. T. Prater, J. Edmunsson, M. Fiskeb, F. Ledbetterc, C. Hillb, M. Meyyappan, C. Roberts, L. Huebnere, P. Halla, N. Werkheiser, NASA’s In-Space Manufacturing Project: Update on Manufacturing Technologies and Materials to Enable More Sustainable and Safer Exploration.// 70th International Astronautical Congress (IAC), Washington, D.C., 21-25 October (2019)
4. Artemis Program, https://en.wikipedia.org/wiki/Artemis_program
5. The Artemis Accords, https://www.nasa.gov/specials/artemis-accords/index.html