Giorgio Merola Isabella Poggi Multimodality and Gestures in the Teacher?s Communication. 101-111 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2915&spage=101 2003 conf/gw/2003 Gesture Workshop db/conf/gw/gw2003.html#MerolaP03