Hajime Tanaka A Four-Class Subscheme of the Association Scheme Coming from the Action ofPGL(2, 4_{f}). [Citation Graph (0, 0)][DBLP] Eur. J. Comb., 2002, v:23, n:1, pp:121-129 [Journal]

Hajime Tanaka Classification of subsets with minimal width and dual width in Grassmann, bilinear forms and dual polar graphs. [Citation Graph (0, 0)][DBLP] J. Comb. Theory, Ser. A, 2006, v:113, n:5, pp:903-910 [Journal]

Finite Euclidean graphs and Ramanujan graphs. [Citation Graph (, )][DBLP]

New proofs of the Assmus-Mattson theorem based on the Terwilliger algebra. [Citation Graph (, )][DBLP]