@inproceedings{CHI-2002-HeerC,
	author        = "Jeffrey Heer and Ed Huai-hsin Chi",
	booktitle     = "{Proceedings of the 20th ACM SIGCHI Conference on Human Factors in Computing Systems: Changing our World, Changing ourselves}",
	doi           = "10.1145/503376.503420",
	isbn          = "1-58113-453-3",
	pages         = "243--250",
	publisher     = "{ACM}",
	title         = "{Separating the swarm: categorization methods for user sessions on the web}",
	year          = 2002,
}