Parallel Variable Stiffness Actuators. - Chase W. Mathews; David J. Braun (IROS, 2021)

Design of a Parallel Elastic Actuator with a Continuously-Adjustable Equilibrium Position. - Evangelos Chatziandreou; Chase W. Mathews; David J. Braun (CoRR, 2022)

Design of a Variable Stiffness Spring with Human-Selectable Stiffness. - Chase W. Mathews; David J. Braun (ICRA, 2023)

Design of Parallel Variable Stiffness Actuators. - Chase W. Mathews; David J. Braun (IEEE Trans. Robotics, 2023)