Recognition of Human Facial Expressions Without Feature Extraction. - Katsuhiro Matsuno; Chil-Woo Lee; Saburo Tsuji (ECCV (1), 1994)

Recognizing human facial expressions in a potential field. - Katsuhiro Matsuno; Saburo Tsuji (ICPR (2), 1994)

Automatic Recognition of Human Facial Expressions. - Katsuhiro Matsuno; Chil-Woo Lee; Satoshi Kimura; Saburo Tsuji (ICCV, 1995)