The data collection of voice across Japan (VAJ) project. - Ikuo Kudo; Takao Nakama; Nozomi Arai; Nahoko Fujimura (ICSLP, 1994)

An estimation of speaker sampling in Voice Across Japan database. - Ikuo Kudo; Takao Nakama; Tomoko Watanabe (ICASSP, 1996)

Data collection of Japanese dialects and its influence into speech recognition. - Ikuo Kudo; Takao Nakama; Tomoko Watanabe; Reiko Kameyama (ICSLP, 1996)