@inproceedings{HT-2006-MertensFB,
	author        = "Robert Mertens and Rosta Farzan and Peter Brusilovsky",
	booktitle     = "{Proceedings of the 17th Conference on Hypertext and Hypermedia}",
	doi           = "10.1145/1149941.1149950",
	isbn          = "1-59593-417-0",
	pages         = "41--44",
	publisher     = "{ACM}",
	title         = "{Social navigation in web lectures}",
	year          = 2006,
}