Emanuele Danovaro Leila De Floriani Paola Magillo Enrico Puppo Representing Vertex-Based Simplicial Multi-complexes. 129-149 2000 conf/dagstuhl/2000dig Digital and Image Geometry http://link.springer.de/link/service/series/0558/bibs/2243/22430129.htm db/conf/dagstuhl/dig2000.html#DanovaroFMP00