MUNAP - A Two-Level Microprogrammed Multiprocessor Architecture for Nonnumeric Processing. - Takanobu Baba; Ken Ishikawa; Kenzo Okuda; Hiroyuki Kobayashi (IFIP Congress, 1980)

A Two-Level Microprogrammed Multiprocessor Computer with Nonnumeric Functions. - Takanobu Baba; Ken Ishikawa; Kenzo Okuda (IEEE Trans. Computers, 1982)

Unification parallelism for prolog processing. - Masayuki Inagawa; Takanobu Baba; Katsuhiro Yamazaki; Kenzo Okuda; Ken Ishikawa (Syst. Comput. Jpn., 1988)