@inproceedings{JCDL-2009-Marshall,
	author        = "Catherine C. Marshall",
	booktitle     = "{Proceedings of the Ninth Joint Conference on Digital Libraries}",
	doi           = "10.1145/1555400.1555438",
	isbn          = "978-1-60558-322-8",
	pages         = "241--250",
	publisher     = "{ACM}",
	title         = "{No bull, no spin: a comparison of tags with other forms of user metadata}",
	year          = 2009,
}