Ranking the vertices of a weighted digraph using the length of forward arcs. - Mikio Kano; Akio Sakamoto (Networks, 1983)

Spanning trees fixed by automorphisms of a graph. - Mikio Kano; Akio Sakamoto (Discret. Math., 1990)

A Maximum Clique Derivation Algorithm for Simplification of Incompletely Specified Machines. - Masaki Hashizume; Takeomi Tamesada; Akio Sakamoto (ISCAS, 1994)

Exploitation of Newspaper-article Characteristics for Article Retrieval and Answer Extraction in QAC Task 2. - Ruck Thawonmas; Takayuki Tomoike; Tomohiko Kawachi; Akio Sakamoto (NTCIR, 2002)