@inproceedings{CIKM-2008-SunLCLG,
	author        = "Yang Sun and Huajing Li and Isaac G. Councill and Wang-Chien Lee and C. Lee Giles",
	booktitle     = "{Proceedings of the 17th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/1458082.1458353",
	isbn          = "978-1-59593-991-3",
	pages         = "1497--1498",
	publisher     = "{ACM}",
	title         = "{Measuring user preference changes in digital libraries}",
	year          = 2008,
}