@inproceedings{VLDB-1981-Yannakakis,
	author        = "Mihalis Yannakakis",
	booktitle     = "{Proceedings of the Seventh International Conference on Very Large Data Bases}",
	cdrom         = "VLDB81/P082.PDF",
	pages         = "82--94",
	publisher     = "{IEEE Computer Society}",
	title         = "{Algorithms for Acyclic Database Schemes}",
	year          = 1981,
}