CollaBoard: Web-based Collaborative Leaning System Using SVG. - Takeshi Sugiyama; Tokiichiro Takahashi (WebNet, 2001)

Manga University: Web-Based Correction System for Artistic Design Education. - Takeshi Sugiyama; Tsuneko A. Kura; Naoyuki Kakehi; Tokiichiro Takahashi (ICCE, 2002)

Development of Web-Based Correction System for Artistic Design. - Tsuneko A. Kura; Naoyuki Kakehi; Hideo Suzuki; Takeshi Sugiyama; Tokiichiro Takahashi; Keiko Takemiya (C5, 2004)

Forbidden subgraphs and the existence of paths and cycles passing through specified vertices. - Jun Fujisawa; Katsuhiro Ota; Takeshi Sugiyama; Masao Tsugaki (Discret. Math., 2008)

Pairs of forbidden class of subgraphs concerning K1, 3 and P6 to have a cycle containing specified vertices. - Takeshi Sugiyama; Masao Tsugaki (Discuss. Math. Graph Theory, 2009)

Customer Path Controlling in the Retail Store with the Vertex Dominating Cycle Algorithms. - Takeshi Sugiyama (KES (3), 2010)

Forbidden subgraphs and the existence of spanning k-trees. - Katsuhiro Ota; Takeshi Sugiyama (Discret. Math., 2010)

Spanning k-Forests with Large Components in K1, k+1-Free Graphs. - Kenta Ozeki; Takeshi Sugiyama (Graphs Comb., 2015)