Adaptation in a variable parallel elastic actuator for rotary mechanisms towards energy efficiency (2021) Mohseni O, Shahri MA, Davoodi A, Ahmadabadi MN Journal article An introductory review of active compliant control (2019) Schumacher M, Wojtusch J, Von Stryk O, Beckerle P Journal article Human-oriented approaches for assistive and rehabilitation robotics — Engineering methods, technical implementation, and treatment (2017) Beckerle P, Salvietti G, Unal R, Mastrogiovanni F Journal article A human–machine-centered design method for (powered) lower limb prosthetics (2017) Beckerle P, Christ O, Schuermann T, Vogt J, Von Stryk O, Rinderknecht S Journal article Scale-aware navigation of a low-cost quadrocopter with a monocular camera (2014) Engel J, Sturm J, Cremers D Journal article