@inproceedings{LICS-2002-Cook,
	author        = "Stephen A. Cook",
	booktitle     = "{Proceedings of the 17th IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2002.10000",
	isbn          = "0-7695-1483-9",
	pages         = "311",
	publisher     = "{IEEE Computer Society}",
	title         = "{Complexity Classes, Propositional Proof Systems, and Formal Theories}",
	year          = 2002,
}