Robbert -jan beun,Tijn Borghuis <br/><br/>
Multimodal human -computer communication( Lecture notes AI 1374 

 - 
 -  Springer-Verlag  1998 
 - 343 
<br/><br/>  
<br/><br/><label>ISBN: </label>3-540-64380-x 
<br/><br/><label>Dewey Class. No.: </label>004.8