Prototype design of a novel modular two-degree-of-freedom variable stiffness actuator. - Maarten Weckx; Ronald Van Ham; Heidi Cuypers; Rene Jimenez-Fabian; Diego Torricelli; José Luis Pons; Bram Vanderborght; Dirk Lefeber (Humanoids, 2014)

Benchmarking Human-Like Posture and Locomotion of Humanoid Robots: A Preliminary Scheme. - Diego Torricelli; S. M. Mizanoor Rahman; José González-Vargas; Vittorio Lippi; Georg Hettich; Lorenz Assländer; Maarten Weckx; Bram Vanderborght; Strahinja Dosen; Massimo Sartori; Jie Zhao 001; Steffen Schütz; et al. (Living Machines, 2014)

A compliant 2-DoF ankle-foot system for a biologically inspired humanoid robot. - David Rodriguez-Cianca; Maarten Weckx; Diego Torricelli; José González-Vargas; Dirk Lefeber; José Luis Pons Rovira (Humanoids, 2015)

A Variable Stiffness Actuator Module With Favorable Mass Distribution for a Bio-inspired Biped Robot. - David Rodriguez-Cianca; Maarten Weckx; Rene Jimenez-Fabian; Diego Torricelli; José González-Vargas; Maria Carmen Sanchez-Villamañan; Massimo Sartori; Karsten Berns; Bram Vanderborght; José Luis Pons Rovira; Dirk Lefeber (Frontiers Neurorobotics, 2019)

Benchmarking Human Likeness of Bipedal Robot Locomotion: State of the Art and Future Trends. - Diego Torricelli; S. M. Mizanoor Rahman; Vittorio Lippi; Maarten Weckx; Glenn Mathijssen; Bram Vanderborght; Thomas Mergner; Dirk Lefeber; José Luis Pons (Metrics of Sensory Motor Coordination and Integration in Robots and Animals, 2020)