Russell Impagliazzo and Avi Wigderson (1997). "P=BPP if E requires exponential circuits: Derandomizing the XOR Lemma". Proceedings of the Twenty-Ninth Annual ACM Symposium on Theory of Computing, pp. 220–229. doi:10.1145/258533.258590
Bennett, Charles H.; Gill, John (1981). Relative to a Random Oracle A, P^A != NP^A != co-NP^A with Probability 1. SIAM Journal on Computing. 10. [S.l.: s.n.] pp. 96–113. ISSN1095-7111
