Daniel Archambault Tamara Munzner David Auber TopoLayout: Multilevel Graph Layout by Topological Features. 305-317 2007 13 IEEE Trans. Vis. Comput. Graph. 2 http://dx.doi.org/10.1109/TVCG.2007.46 db/journals/tvcg/tvcg13.html#ArchambaultMA07