Pere Brunet Including shape handles in recursive subdivision surfaces. [Citation Graph (0, 0)][DBLP] Computer Aided Geometric Design, 1988, v:5, n:1, pp:41-50 [Journal]
Glen Mullineux Finding the composite outer boundary and holes of a set of closed curves. [Citation Graph (0, 0)][DBLP] Computer Aided Geometric Design, 1988, v:5, n:1, pp:51-58 [Journal]