| 2018 | FUN | Evolution of Impossible Objects (Invited Paper). | Kokichi Sugihara |
| 2012 | AINA | Security Philosophy Important for a Sustainable Smart Grid System. | Amy Poh Ai Ling, Kokichi Sugihara, Masao Mukaidono |
| 2006 | GMP | Computation of Normals for Stationary Subdivision Surfaces. | Hiroshi Kawaharada, Kokichi Sugihara |
| 2005 | WSCG | New Spectral Decomposition for 3D Polygonal Meshes and its Application for Watermarking. | Kohei Murotani, Kokichi Sugihara |
| 2004 | COCOON | Robust Geometric Computation Based on Digital Topology. | Kokichi Sugihara |
| 2004 | ICCSA | Improving the Global Continuity of the Natural Neighbor Interpolation. | Hisamoto Hiyoshi, Kokichi Sugihara |
| 2004 | ICCSA | Plane-Sweep Algorithm of O(nlogn) for the Inclusion Hierarchy among Circles. | Deok-Soo Kim, Byunghoon Lee, Cheol-Hyung Cho, Kokichi Sugihara |
| 2004 | ICCSA | Approximation of the Boat-Sail Voronoi Diagram and Its Application. | Tetsushi Nishida, Kokichi Sugihara |
| 2003 | ICCSA | Two-Dimensional Range Search Based on the Voronoi Diagram. | Takeshi Kanda, Kokichi Sugihara |
| 2003 | ICCSA | Voronoi Diagram of Circles in a Large Circle. | Deok-Soo Kim, Donguk Kim, Kokichi Sugihara |
| 2003 | ISAAC | Voronoi Diagram in the Flow Field. | Tetsushi Nishida, Kokichi Sugihara |
| 2002 | GMP | G1 Surface Interpolation for Irregularly Located Data. | Kohei Murotani, Kokichi Sugihara |
| 2002 | GMP | The Minkowski Sum of Two Simple Surfaces Generated by Slope-Monotone Closed Curves. | Joon-Kyung Seong, Myung-Soo Kim, Kokichi Sugihara |
| 2001 | ICCS | Robust and Fast Algorithm for a Circle Set Voronoi Diagram in a Plane. | Deok-Soo Kim, Donguk Kim, Kokichi Sugihara, Joonghyun Ryu |
| 2001 | ICCS | Apollonius Tenth Problem as a Point Location Problem. | Deok-Soo Kim, Donguk Kim, Kokichi Sugihara, Joonghyun Ryu |
| 2001 | ICCS | Crystal Voronoi Diagram and Its Applications to Collision-Free Paths. | Kei Kobayashi, Kokichi Sugihara |
| 2001 | ICCS | Robust Geometric Computation Based on Topological Consistency. | Kokichi Sugihara |
| 2000 | GMP | A Sequence of Generalized Coordinate Systems Based on Voronoi Diagrams and Its Application to Interpolation. | Hisamoto Hiyoshi, Kokichi Sugihara |
| 2000 | ISAAC | Voronoi Diagram of a Circle Set Constructed from Voronoi Diagram of a Point Set. | Deok-Soo Kim, Donguk Kim, Kokichi Sugihara |
| 1999 | ISAAC | Topology-Oriented Approach to Robust Geometric Computation. | Kokichi Sugihara |
| 1999 | PG | Exact Computation of 4-D Convex Hulls with Perturbation and Acceleration. | Kokichi Sugihara |
| 1997 | ISAAC | Topology Oriented vs. Exact Arithmetic - Experience in Implementing the Three-Dimensional Convex Hull Algorithm. | Tsuyoshi Minakawa, Kokichi Sugihara |
| 1992 | ISAAC | Topologically Consistent Algorithms Realted to Convex Polyhedra. | Kokichi Sugihara |
| 1979 | IJCAI | Automatic Construction of Junction Dictionaries and Their Exploitation for the Analysis of Range Data. | Kokichi Sugihara |
| 1977 | IJCAI | Range Data Understanding Guided by a Junction Dictionary. | Kokichi Sugihara, Yoshiaki Shirai |