Authors: Donato, G Bartlett, MS Hager, JC Ekman, P Sejnowski, TJ

Citation: G. Donato et al., Classifying facial actions, IEEE PATT A, 21(10), 1999, pp. 974-989

Authors: Bartlett, MS Hager, JC Ekman, P Sejnowski, TJ

Citation: Ms. Bartlett et al., Measuring facial expressions by computer image analysis, PSYCHOPHYSL, 36(2), 1999, pp. 253-263