@conference {18306,
	title = {Recognition of head gestures using hidden markov models},
	booktitle = {Pattern Recognition, 1996., Proceedings of the 13th International Conference on},
	volume = {3},
	year = {1996},
	month = {1996///},
	pages = {461 - 465},
	author = {Morimoto,C. and Yacoob,Yaser and Davis, Larry S.}
}
