Locally Interpolating Subdivision Surfaces Supporting Free-Form 2D Deformations. - Johan Claes; Frank Van Reeth; Marc Ramaekers (DEFORM/AVATARS, 2000)

Providing Local Interpolation, Tension and Normal Control in the Manipulation of Loop Subdivision Surfaces. - Johan Claes; Marc Ramaekers; Frank Van Reeth (Computer Graphics International, 2001)