Actuation mechanisms for biologically inspired everting toroidal robots. - Viktor L. Orekhov; Dennis W. Hong; Mark Yim (IROS, 2010)

Humanoid balancing on unstable terrain using whole-body momentum control and series elastic actuation. - Michael A. Hopkins; Viktor L. Orekhov; Coleman S. Knabe; Brian Y. Lattimer; Dennis W. Hong (Humanoids, 2014)

Two configurations of series elastic actuators for linearly actuated humanoid robots with large range of motion. - Coleman S. Knabe; Viktor L. Orekhov; Michael A. Hopkins; Brian Y. Lattimer; Dennis W. Hong (Humanoids, 2014)

An unlumped model for linear series elastic actuators with ball screw drives. - Viktor L. Orekhov; Coleman S. Knabe; Michael A. Hopkins; Dennis W. Hong (IROS, 2015)

Team VALOR's ESCHER: A Novel Electromechanical Biped for the DARPA Robotics Challenge. - Coleman Knabe; Robert J. Griffin; James Burton 001; Graham Cantor-Cooke; Lakshitha Dantanarayana; Graham Day; Oliver Ebeling-Koning; Eric Hahn; Michael A. Hopkins; Jordan Neal; Jackson Newton; Chris Nogales; et al. (J. Field Robotics, 2017)