1. Representations for rigid solids: theory, methods, and systems;Requicha;ACM Computing Surveys,1980
2. Winged edge polyhedron representation;Baumgart,1972
3. Primitives for the manipulation of general subdivisions and the computation of Voronoi;Guibas;ACM Transactions on Graphics,1985
4. The radial edge structure: a topological representation for non-manifold geometric modelling;Weiler,1988
5. Representing geometric structures in d dimensions: topology and order;Brisson,1989