@inproceedings{KR-1996-Gottlob,
	author        = "Georg Gottlob",
	booktitle     = "{Proceedings of the Fifth International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-421-9",
	pages         = "647--649",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Complexity and Expressive Power of KR Formalisms}",
	year          = 1996,
}