Piegl, Les A <br/><br/>
The NURBS book 

 - 2 
 - New York  Springer Verlag  1997 
 - xiv, 646p.  
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>3540615458 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer graphics ---- CAD/CAM<br/>Nurbs (Non-Uniform Rrational B-Splines) -- Shapes (Analytic) -- Curves and Surfaces -- Mathematical bases