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References
1.
1.
Ekman P
,
Friesen WV
: Facial action coding system Palo Alto , California , Consulting Psychologists Press, Inc. , 1978
2.
2.
Ekman P
: Expression and the nature of emotion , Ekman P, Friesen WV, Ellsworth P: Emotion in the human face . Elmsford, NY , Pergamon , 1972
3.
3.
Ekman P
,
Friesen WV
: Unmasking the face . Palo Alto, California , Consulting Psychologists Press, Inc. , 1975