@Article{Hoey12009,
	author={Jasper  Snoek and Jesse  Hoey and Liam  Stewart and Richard S. Zemel and Alex  Mihailidis},
	title={Automated Detection of Unusual Events on Stairs},
	journal={Image and Vision Computing},
	publisher={Elsevier},
	volume={27},
	number={1-2},
	month={January},
	year={2009}
}