C.  Piazza, C. Della Santina,, Gasparri, G. M., Catalano, M. G., Grioli, G., Garabini, M., and Bicchi, A., ?Toward an Adaptive Foot for Natural Walking?, in International Conference on Humanoid Robots (HUMANOIDS2016), Cancun, Mexico, November 15-17, 2016, 2016 [Online]. Available: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7803423

L.  Balletti, Rocchi, A., Belo, F. A. W., Catalano, M. G., Garabini, M., Grioli, G., and Bicchi, A., ?Towards variable impedance assembly: the VSA peg-in-hole?, in IEEE-RAS International Conference on Humanoid Robots, Osaka, Japan, 2012.