Xu, Wei <br/><br/>
Drawing in the digital age :   an observational method for artists and animators / 
Wei Xu 
 - Hoboken :  John Wiley,  2012. 
 - xxiii, 200 p. 
<br/><br/><label>ISBN: </label>9781118176504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drawing--Mathematical models--Technique
<br/><br/><label>Dewey Class. No.: </label>741.2  / XU-D