Reviewing Japanese sake quality and its brewing by AHP. - Kei Ohtsuka (SMC, 1998)

A Data Mining Approach to Restaurant Menu Analysis. - Kei Ohtsuka (Applied Informatics, 1999)

Objective Measurement of Dynamic Balance Function by the Simultaneous Measurement of the Center of Gravity (COG) and Center of Pressure (COP). - Masahiko Mukaino; Fumihiro Matsuda; Ryoma Sassa; Kei Ohtsuka; Nobuhiro Kumazawa; Kazuhiro Tsuchiyama; Shigeo Tanabe; Eiichi Saitoh (IAS, 2016)

Persistent Effect of Gait Exercise Assist Robot Training on Gait Ability and Lower Limb Function of Patients With Subacute Stroke: A Matched Case-Control Study With Three-Dimensional Gait Analysis. - Yiji Wang; Masahiko Mukaino; Satoshi Hirano; Hiroki Tanikawa; Junya Yamada; Kei Ohtsuka; Takuma Ii; Eiichi Saitoh; Yohei Otaka (Frontiers Neurorobotics, 2020)