@inproceedings{HT-2009-SiersdorferS,
	author        = "Stefan Siersdorfer and Sergej Sizov",
	booktitle     = "{Proceedings of the 20th Conference on Hypertext and Hypermedia}",
	doi           = "10.1145/1557914.1557959",
	isbn          = "978-1-60558-486-7",
	pages         = "261--270",
	publisher     = "{ACM}",
	title         = "{Social recommender systems for web 2.0 folksonomies}",
	year          = 2009,
}