@inproceedings{STOC-1988-CosmadakisGKV,
	author        = "Stavros S. Cosmadakis and Haim Gaifman and Paris C. Kanellakis and Moshe Y. Vardi",
	booktitle     = "{Proceedings of the 20th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/62212.62259",
	isbn          = "0-89791-264-0",
	pages         = "477--490",
	publisher     = "{ACM}",
	title         = "{Decidable Optimization Problems for Database Logic Programs}",
	year          = 1988,
}