@inproceedings{STOC-1994-RazborovR,
	author        = "Alexander A. Razborov and Steven Rudich",
	booktitle     = "{Proceedings of the 26th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/195058.195134",
	isbn          = "0-89791-663-8",
	pages         = "204--213",
	publisher     = "{ACM}",
	title         = "{Natural proofs}",
	year          = 1994,
}