Concas, A., G. Corrias, R. Orru, R. Licheri, M. Pisu, and G. Cao. 2012. “Remarks on ISRU and ISFR Technologies for Manned Missions on Moon and Mars”. Eurasian Chemico-Technological Journal 14 (3):243-48. https://doi.org/10.18321/ectj120.