Liang Song Raviraj Adve Dimitrios Hatzinakos Matrix Pencil for Positioning in Wireless ad hoc Sensor Network. 18-27 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2920&spage=18 2004 conf/ewsn/2004 EWSN db/conf/ewsn/ewsn2004.html#SongAH04