Variable impedance magnetorheological Clutch Actuator and telerobotic implementation. - Daniel S. Walker; Dan J. Thoma; Günter Niemeyer (IROS, 2009)

User-controlled variable impedance teleoperation. - Daniel S. Walker; Robert P. Wilson; Günter Niemeyer (ICRA, 2010)

Examining The benefits of variable impedance actuation. - Daniel S. Walker; Günter Niemeyer (IROS, 2010)

Demonstrating the benefits of variable impedance to telerobotic task execution. - Daniel S. Walker; John Kenneth Salisbury Jr.; Günter Niemeyer (ICRA, 2011)