Katja Schwieger Heinrich Nuszkowski Gerhard Fettweis Analysis of Node Energy Consumption in Sensor Networks. 94-105 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2920&spage=94 2004 conf/ewsn/2004 EWSN db/conf/ewsn/ewsn2004.html#SchwiegerNF04