Axel and DuAxel rovers for the sustainable exploration of extreme terrains. - Issa A. D. Nesnas; Jaret B. Matthews; Pablo Abad-Manterola; Joel W. Burdick; Jeffrey A. Edlund; Jack C. Morrison; Robert D. Peters; Melissa M. Tanner; Robert N. Miyake; Benjamin S. Solish; Robert C. Anderson (J. Field Robotics, 2012)