Current control of a PWM power amplifier by an approximate 2-degree-of-freedom digital controller. - Keisuke Fujita; Kohji Higuchi; Kazushi Nakano; Koji Matsushita; Tatsuyoshi Kajikawa; Fumiho Chino (Artif. Life Robotics, 2009)

Nearly Gorenstein Polytopes. - Thomas Hall; Max Kölbl; Koji Matsushita; Sora Miyashita (Electron. J. Comb., 2023)

Matching Polytopes, Gorensteinness, and the Integer Decomposition Property. - Benjamin Eisley; Koji Matsushita; Andrés R. Vindas-Meléndez (Graphs Comb., 2025)