@inproceedings{CIKM-2000-LiuPT,
	author        = "Ling Liu and Calton Pu and Wei Tang",
	booktitle     = "{Proceedings of the Ninth ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/354756.354860",
	pages         = "512--519",
	publisher     = "{ACM}",
	title         = "{WebCQ: Detecting and Delivering Information Changes on the Web}",
	year          = 2000,
}