@inproceedings{KDD-2006-BackstromHKL,
	author        = "Lars Backstrom and Daniel P. Huttenlocher and Jon M. Kleinberg and Xiangyang Lan",
	booktitle     = "{Proceedings of the 12th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/1150402.1150412",
	isbn          = "1-59593-339-5",
	pages         = "44--54",
	publisher     = "{ACM}",
	title         = "{Group formation in large social networks: membership, growth, and evolution}",
	year          = 2006,
}