A neural network learning strategy for the control of a one-legged hopping machine. - John J. Helferty; Joseph B. Collins; Moshe Kam (ICRA, 1989)

Neuromorphic control of robotic manipulators. - John J. Helferty; Saroj Biswas (ICRA, 1991)

Comments on "Block multirate input-output model for sampled-data control systems". - Amy M. Jakubowski; John J. Helferty (IEEE Trans. Autom. Control., 1994)