Emmanuel Munguia Tapia Stephen S. Intille Louis Lopez Kent Larson The Design of a Portable Kit of Wireless Sensors for Naturalistic Data Collection. 117-134 2006 conf/pervasive/2006 Pervasive http://dx.doi.org/10.1007/11748625_8 db/conf/pervasive/pervasive2006.html#TapiaILL06