@inproceedings{SIGMOD-1994-Galindo-Legaria,
	author        = "César A. Galindo-Legaria",
	booktitle     = "{Proceedings of the 24th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD94/P348.PDF",
	doi           = "10.1145/191839.191908",
	pages         = "348--358",
	publisher     = "{ACM Press}",
	title         = "{Outerjoins as Disjunctions}",
	year          = 1994,
}