@inproceedings{PODS-1994-SuciuP,
	author        = "Dan Suciu and Jan Paredaens",
	booktitle     = "{Proceedings of the 13th Symposium on Principles of Database Systems}",
	doi           = "10.1145/182591.182613",
	isbn          = "0-89791-642-5",
	pages         = "201--209",
	publisher     = "{ACM Press}",
	title         = "{Any Algorithm in the Complex Object Algebra with Powerset Needs Exponential Space to Compute Transitive Closure}",
	year          = 1994,
}