@inproceedings{RecSys-2009-Bitton,
	author        = "Ephrat Bitton",
	booktitle     = "{Proceedings of the Third Conference on Recommender Systems}",
	doi           = "10.1145/1639714.1639797",
	isbn          = "978-1-60558-435-5",
	pages         = "393--396",
	publisher     = "{ACM}",
	title         = "{A spatial model for collaborative filtering of comments in an online discussion forum}",
	year          = 2009,
}