@conference {43,
	title = {The Faces of Engagement: Automatic Recognition of Student Engagement from Facial Expressions},
	booktitle = {IEEE Transactions on Affective Computing},
	year = {2014},
	month = {01/2014-03/2014},
	author = {J. Whitehill and Z. Serpell and Y-C Lin and A. Foster and J. Movellan}
}