@inproceedings{SIGIR-2003-LawrieC,
	author        = "Dawn J. Lawrie and W. Bruce Croft",
	booktitle     = "{Proceedings of the 26th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/860435.860549",
	isbn          = "1-58113-646-3",
	pages         = "457--458",
	publisher     = "{ACM}",
	title         = "{Generating hierarchical summaries for web searches}",
	year          = 2003,
}