Overview of the Spirit Mars Exploration Rover mission to Gusev Crater: Landing site to Backstay Rock in the Columbia Hills - Arvidson, R. E.; Squyres, S.; Anderson, R.; Bell, J.; Blaney, D.; Bruckner, J.; Cabrol, N.A.; Calvin, W.; Carr, M.; Christensen, P.; Clark, B.; Crumpler, L.; et al. (Journal of Geophysical Research E: Planets, 2006)