@inproceedings{STOC-1985-CosmadakisK,
	author        = "Stavros S. Cosmadakis and Paris C. Kanellakis",
	booktitle     = "{Proceedings of the 17th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/22145.22176",
	pages         = "273--284",
	publisher     = "{ACM}",
	title         = "{Equational Theories and Database Constraints}",
	year          = 1985,
}