Tomasz M. Rutkowski Susumu Seki Yoko Yamakata Koh Kakusho Michihiko Minoh Toward the Human Communication Efficiency Monitoring from Captured Audio and Video Media in Real Environments. 1093-1100 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2774&spage=1093 2003 conf/kes/2003-2 KES db/conf/kes/kes2003-2.html#RutkowskiSYKM03