@inproceedings{HT-2008-HansenG,
	author        = "Frank Allan Hansen and Kaj Grønbæk",
	booktitle     = "{Proceedings of the 19th Conference on Hypertext and Hypermedia}",
	doi           = "10.1145/1379092.1379126",
	isbn          = "978-1-59593-985-2",
	pages         = "175--180",
	publisher     = "{ACM}",
	title         = "{Social web applications in the city: a lightweight infrastructure for urban computing}",
	year          = 2008,
}