@inproceedings{SIGIR-2000-SwanA,
	author        = "Russell C. Swan and James Allan",
	booktitle     = "{Proceedings of the 23rd International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/345508.345546",
	isbn          = "1-58113-226-3",
	pages         = "49--56",
	publisher     = "{ACM}",
	title         = "{Automatic generation of overview timelines}",
	year          = 2000,
}