TY - CONF AU - Ekkelenkamp, R. AU - Veneman, J. AU - Van Der Kooij, H. PY - 2007 DO - 10.1109/ROBOT.2007.363952 SN - 1424406021 SN - 9781424406029 SN - 1050-4729 UR - https://hdl.handle.net/11556/1516 LA - eng TI - LOPES: A lower extremity powered exoskeleton TY - conference output ER -