David Fradin Daniel Meneveaux Pascal Lienhardt A Hierarchical Topology-Based Model for Handling Complex Indoor Scenes. 149-162 2006 25 Comput. Graph. Forum 2 http://www.eg.org/EG/CGF/volume25/issue2/v25i2pp149-162.pdf db/journals/cgf/cgf25.html#FradinML06