Amitava Datta Subbiah Soundaralakshmi Energy-Efficient Communication Protocols for Wireless Networks. 181-191 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2662&spage=181 2003 conf/icoin/2003 ICOIN db/conf/icoin/icoin2003.html#DattaS03