@inproceedings{ICPR-2008-NaturelO,
	author        = "Xavier Naturel and Jean-Marc Odobez",
	booktitle     = "{Proceedings of the 19th International Conference on Pattern Recognition}",
	doi           = "10.1109/ICPR.2008.4761139",
	isbn          = "978-1-4244-2175-6",
	pages         = "1--4",
	publisher     = "{IEEE Computer Society}",
	title         = "{Detecting queues at vending machines: A statistical layered approach}",
	year          = 2008,
}