Project management expert system (abstract only). - Hideki Sato; Hitoshi Matsumoto; Hiroki Iciki (ACM Conference on Computer Science, 1987)

Multimedia/Realtime Extensions for the Mach Operating System. - Jun Nakajima; Masatomo Yazaki; Hitoshi Matsumoto (USENIX Summer, 1991)

Multimedia/Realtime Extensions for Mach 3.0. - Jun Nakajima; Masatomo Yazaki; Hitoshi Matsumoto (USENIX Workshop on Microkernels and Other Kernel Architectures, 1992)