A CMOS-VLSI rate conversion digital filter for digital audio signal processing. - Botaro Hirosaki; Y. Tomimitsu; Shinya Ishihara; H. Nakada; Kohei Akiyama; Kazunori Nosaka (ICASSP, 1984)

High-Resolution Analog Measurement on Mixed-Signal LSI Tester. - Kohei Akiyama; Hiroshi Nishimura; Kyoji Anazawa; Akito Kishida; Nobuyuki Kasuga (ITC, 1989)

Human interface based on finger gesture recognition using omni-directional image sensor. - Motonori Doi; Shinji Ueda; Kohei Akiyama (VECIMS, 2003)