Najafi, B.Aminian, K.Loew, F.Blanc, Y.Robert, Ph.2006-11-302006-11-302006-11-30200010.1109/MMB.2000.893847https://infoscience.epfl.ch/handle/20.500.14299/237130WOS:000173833000119An ambulatory system for physical activity monitoring in elderlytext::conference output::conference proceedings::conference paper