TY - RPRT TI - Instantaneous postural stability characterization using time-frequency analysis. AU - M Ferdjallah AU - G F Harris AU - J J Wertsch PY - 1999 DO - 10.1016/s0966-6362(99)00023-5 UR - https://pubmed.ncbi.nlm.nih.gov/10502646/ ID - 10502646 ER -