@inproceedings{PODS-2006-KolaitisPT,
	author        = "Phokion G. Kolaitis and Jonathan Panttaja and Wang Chiew Tan",
	booktitle     = "{Proceedings of the 25th Symposium on Principles of Database Systems}",
	doi           = "10.1145/1142351.1142357",
	isbn          = "1-59593-318-2",
	pages         = "30--39",
	publisher     = "{ACM}",
	title         = "{The complexity of data exchange}",
	year          = 2006,
}