Sherman, William R. <br/><br/>
Understanding virtual reality / 
William R, Sherman y Alan B. Craig 
 - Amsterdan :  Morgan Kaufmann Publishers,  2003       
 - xii 582 p. 
<br/><br/><label>ISBN: </label>1558603530 
<br/><br/><label>LC Class. No.: </label>QA 76.9 S553u 2003