TY - RPRT TI - Closed loop problems in biomechanics. Part II--an optimization approach. AU - C L Vaughan AU - J G Hay AU - J G Andrews PY - 1982 DO - 10.1016/0021-9290(82)90253-6 UR - https://pubmed.ncbi.nlm.nih.gov/7096374/ ID - 7096374 ER -