| Type | Author(s) | Title | Other Titles | Citation | Citation(alt) | Issue Date |
| article | Izumiya, Shyuichi; Romero-Fuster, Maria Carmen; Saji, Kentaro; Takahashi, Masatomo | HORO-FLAT SURFACES ALONG CUSPIDAL EDGES IN THE HYPERBOLIC SPACE | - | Journal of Singularities | - | 1-Dec-2020 |
| article (author version) | Chen, Liang; Izumiya, Shyuichi; Pei, DongHe; Saji, Kentaro | Anti de Sitter horospherical flat timelike surfaces | - | Science China : Mathematics | - | 1-Sep-2014 |
| article (author version) | Izumiya, Shyuichi; Nagai, Takayuki; Saji, Kentaro | Great circular surfaces in the three-sphere | - | Differential Geometry and its Applications | - | Jun-2011 |
| bulletin (article) | Izumiya, Shyuichi; Nagai, Takayuki; Saji, Kentaro | Great circular surfaces in the three-sphere | - | Hokkaido University Preprint Series in Mathematics | - | 10-May-2010 |
| bulletin (article) | Izumiya, Shyuichi; Saji, Kentaro | The mandala of Legendrian dualities for pseudo-spheres in Lorentz-Minkowski space and "flat" spacelike surfaces | - | Hokkaido University Preprint Series in Mathematics | - | 30-Sep-2009 |
| article (author version) | Izumiya, Shyuichi; Romero Fuster, María del Carmen; Saji, Kentaro | Flat lightlike hypersurfaces in Lorentz-Minkowski 4-space | - | Journal of Geometry and Physics | - | Nov-2009 |
| bulletin (article) | Izumiya, Shyuichi; Romero Fuster, Maria del Carmen; Saji, Kentaro | Flat Lightlike Hypersurfaces in Lorentz-Minkowski 4-space | - | Hokkaido University Preprint Series in Mathematics | - | 12-Jul-2008 |
| bulletin (article) | Izumiya, Shyuichi; Saji, Kentaro; Takahashi, Masatomo | Horospherical flat surfaces in Hyperbolic 3-space | - | Hokkaido University Preprint Series in Mathematics | - | 20-Mar-2007 |
| bulletin (article) | Saji, Kentaro; Takahashi, Masatomo | Singularities of smooth mappings with patterns | - | Hokkaido University Preprint Series in Mathematics | - | 16-Nov-2005 |
| bulletin (article) | Izumiya, Shyuichi; Saji, Kentaro; Takeuchi, Nobuko | Circular surfaces | - | Hokkaido University Preprint Series in Mathematics | - | 2005 |
