@inproceedings{CIKM-2013-LanNGC,
	author        = "Yanyan Lan and Shuzi Niu and Jiafeng Guo and Xueqi Cheng",
	booktitle     = "{Proceedings of the 22nd ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2505515.2505685",
	isbn          = "978-1-4503-2263-8",
	pages         = "1261--1270",
	publisher     = "{ACM}",
	title         = "{Is top-k sufficient for ranking?}",
	year          = 2013,
}