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 (1): 96–113, ISSN1095-7111
