Bacon, S. N., McDonald, E. V., Baker, S. E., Caldwell, T. G., Stullenbarger, G. (2007). Desert terrain characterization of landforms and surface cover within vehicle test courses at U.S. Army Yuma Proving Ground, USA [abstract], Proceedings of the Joint North American, Asia-Pacific ISTVS Conference and Annual Meeting of Japanese Society for Terramechanics: Fairbanks, AK, June 3, 2007-June 6, 2007, Session 41 Terrain Impacts, talk and short paper.