@book{28292,
	author = {Ekman, Paul. and Friesen, Wallace V.},
	title = {Emotion in the human face: guide-lines for research and an integration of findings},
	publisher = {Pergamon Press},
	year = {[1972]},
	series = {Pergamon general psychology series},
	address = {New York},
	note = {Rev. ed. published as: Emotion in the human face / edited by Paul Ekman. 2nd ed. 1982.}
}