Impagliazzo, Russell; Levin, Leonid A.; Luby, Michael (1989), "Pseudo-random Generation from one-way functions", in Johnson, David S. (ed.), Proceedings of the 21st Annual ACM Symposium on Theory of Computing, May 14-17, 1989, Seattle, Washington, USA, {ACM}, pp. 12–24, doi:10.1145/73007.73009, S2CID 18587852 /wiki/Russell_Impagliazzo