Detecting Characters in Grey-Scale Scene Images. - Yongmei Liu 005; Tsuyoshi Yamamura; Noboru Ohnishi; Noboru Sugie (ACCV (2), 1998)

Character-based mobile robot navigation. - Yongmei Liu 005; Toshimitsu Tanaka; Tsuyoshi Yamamura; Noboru Ohnishi (IROS, 1999)