@inproceedings{HT-2009-Choudhury,
	author        = "Munmun De Choudhury",
	booktitle     = "{Proceedings of the 20th Conference on Hypertext and Hypermedia}",
	doi           = "10.1145/1557914.1557983",
	isbn          = "978-1-60558-486-7",
	pages         = "349--350",
	publisher     = "{ACM}",
	title         = "{Modeling and predicting group activity over time in online social media}",
	year          = 2009,
}