Morpion Solitaire 5D: a new upper bound 121 on the maximum score. - Akitoshi Kawamura; Takuma Okamoto; Yuichi Tatsu; Yushi Uno; Masahide Yamato (CCCG, 2013)

Exact and fixed-parameter algorithms for metro-line crossing minimization problems. - Yoshio Okamoto; Yuichi Tatsu; Yushi Uno (CoRR, 2013)

Morpion Solitaire 5D: A new upper bound of 121 on the maximum score. - Akitoshi Kawamura; Yuichi Tatsu; Yushi Uno; Masahide Yamato (Inf. Process. Lett., 2017)