Optimal motion planning of a one-legged hopping robot. - Guang-Ping He; Zhi-Yong Geng (ROBIO, 2007)

The nonholonomic redundancy of second-order nonholonomic mechanical systems. - Guang-Ping He; Zhi-Yong Geng (Robotics Auton. Syst., 2008)

Characteristics analysis and stabilization of a planar 2R underactuated manipulator. - Guang-Ping He; Zhi-Lü Wang; Jie Zhang; Zhi-Yong Geng (Robotica, 2016)