@inproceedings{KDD-2003-HopcroftKKS,
	author        = "John E. Hopcroft and Omar Khan and Brian Kulis and Bart Selman",
	booktitle     = "{Proceedings of the Ninth International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/956750.956816",
	isbn          = "1-58113-737-0",
	pages         = "541--546",
	publisher     = "{ACM}",
	title         = "{Natural communities in large linked networks}",
	year          = 2003,
}