Gottfried, Bj5rn. <br/><br/>
Shape from Positional-Contrast  Characterising Sketches with Qualitative Line Arrangements [electronic resource] 
by Bj5rn Gottfried 
 - Wiesbaden  Deutscher Universit ts-Verlag  2007 
<br/><br/> http://dx.doi.org/10.1007/978-3-8350-9163-4 
<br/><br/><label>ISBN: </label>3835091634 
<br/><br/><label>Dewey Class. No.: </label>006.370222  / (e-book)