Johan Claes Koen Beets Frank Van Reeth Andrei Iones Anton Krupkin Turning the Approximating Catmull-Clark Subdivision Scheme into a Locally Interpolating Surface Modeling Tool. 42-48 2001 conf/smi/2001 Shape Modeling International http://csdl.computer.org/comp/proceedings/smi/2001/0853/00/08530042abs.htm db/conf/smi/smi2001.html#ClaesBRIK01