Enabling Exploration: Robotic Site Surveys and Prospecting for Hydrogen Elphic, R. C. ; Kobayashi, L. ; Allen, M. ; Bualat, M. ; Deans, M. ; Fong, T. ; Lee, S. ; To, V. ; Utz, H. Abstract Publication: LEAG Workshop on Enabling Exploration: The Lunar Outpost and Beyond Pub Date: October 2007 Bibcode: 2007LPICo1371.3046E