Method for drawing intersecting clustered graphs and its application to web ontology language. - Hiroki Omote; Kozo Sugiyama (APVIS, 2006)

Force-directed drawing method for intersecting clustered graphs. - Hiroki Omote; Kozo Sugiyama (APVIS, 2007)

Method for Visualizing Complicated Structures Based on Unified Simplification Strategy. - Hiroki Omote; Kozo Sugiyama (IEICE Trans. Inf. Syst., 2007)