@inproceedings{VLDB-2007-LeeZLL,
	author        = "Ken C. K. Lee and Baihua Zheng and Huajing Li and Wang-Chien Lee",
	booktitle     = "{Proceedings of the 33rd International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/2007/papers/research/p279-lee.pdf",
	isbn          = "978-1-59593-649-3",
	pages         = "279--290",
	publisher     = "{ACM}",
	title         = "{Approaching the Skyline in Z Order}",
	year          = 2007,
}