Extraction of quantified fuzzy rules from numerical data. - Motohide Umano; Takahiro Okada; Itsuo Hatono; Hiroyuki Tamura (FUZZ-IEEE, 2000)

Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique. - Kazuo Aida; Takahiro Okada; Youji Hinako (IEICE Trans. Electron., 2007)