@misc{W2015880590,
  author = {Johan Håstad and Russell Impagliazzo and Leonid A. Levin and Michael Luby},
  title = {A Pseudorandom Generator from any One-way Function},
  year = {1999},
  howpublished = {SIAM Journal on Computing},
  doi = {https://doi.org/10.1137/s0097539793244708}
}