@InProceedings{Fergus04, author = "Fergus, R. and Perona, P. and Zisserman, A.", title = "A Visual Category Filter for Google Images", booktitle = "Proceedings of the 8th European Conference on Computer Vision, Prague, Czech Republic", year = 2004, pages = "242--256", month = may, url = "http://www.robots.ox.ac.uk/~vgg" }