@conference {18313,
	title = {A probabilistic framework for rigid and non-rigid appearance based tracking and recognition},
	booktitle = {Automatic Face and Gesture Recognition, 2000. Proceedings. Fourth IEEE International Conference on},
	year = {2000},
	month = {2000///},
	pages = {491 - 498},
	author = {De la Torre,F. and Yacoob,Yaser and Davis, Larry S.}
}
