Level-Ground Walking for 3D Quasi-Passive Walker with Flat Feet - Lateral-plane Input using McKibben-Type Artificial Muscle -Akihiro Yamamoto, Shinsaku Fujimoto and Tetsuya KinugasaMATEC Web of Conferences, 51 (2016) 02009DOI: https://doi.org/10.1051/matecconf/20165102009