@inproceedings{SIGIR-2006-ButtcherCL,
	author        = "Stefan Büttcher and Charles L. A. Clarke and Brad Lushman",
	booktitle     = "{Proceedings of the 29th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1148170.1148233",
	isbn          = "1-59593-369-7",
	pages         = "356--363",
	publisher     = "{ACM}",
	title         = "{Hybrid index maintenance for growing text collections}",
	year          = 2006,
}