@inproceedings{Hopfgartner:2008,
 	author={Hopfgartner, Frank and Vallet, David and Halvey, Martin and Jose, Joemon M.},
 	title={Search Trails using User Feedback to Improve Video Search},
 	booktitle={MM'08 - Proceedings of the ACM International Conference on Multimedia, Vancouver, Canada},
 	year=2008,
         month={10},
         pages={339--348},
         url = {http://doi.acm.org/10.1145/1459359.1459405},
         publisher = {ACM Press}
}