@inproceedings{KDD-2013-Varian,
	author        = "Hal Varian",
	booktitle     = "{Proceedings of the 19th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/2487575.2492150",
	isbn          = "978-1-4503-2174-7",
	pages         = "4",
	publisher     = "{ACM}",
	title         = "{Predicting the present with search engine data}",
	year          = 2013,
}