Centaur: NASA's Mobile Humanoid Designed for Field Work. - Joshua Mehling; Philip Strawser; Lyndon B. Bridgwater; William K. Verdeyen; Roger Rovekamp (ICRA, 2007)

An integrated neuro-robotic interface for stroke rehabilitation using the NASA X1 powered lower limb exoskeleton. - Yongtian He; Kevin Nathan; Anusha Venkatakrishnan; Roger Rovekamp; Christopher Beck; Recep Ozdemir; Gerard E. Francisco; José L. Contreras-Vidal (EMBC, 2014)