1. Optimizing space exploration;Schulze-Makuch;Adv. Astrobiol. Biogeophys.,2008
2. Space colonisation;Ramachandran;Aerosp. Am.,2008
3. G.R. Woodcock, Re-thinking Human Space Exploration, AIAA Space 2009 Conference and Exposition, Pasadena, CA (United States), September 14–17, 2009.
4. S. Raval, Exploration colonization resource extraction and utilization of Moon and Mars (ECROMM), in: Proceedings of the 62nd International Astronautical Congress IAC, Cape Town (South Africa) October 3–7 2011, vol. 9, 2011, pp. 7845–51.
5. A. Burelle, Mining the Moon: a first step in harnessing extraterrestrial resources, in: Proceedings of the 61th International Astronautical Congress IAC 2010, Prague, Czech Republic, September 27–October 1 2010, pp. 6914–18.