Christopher Umans. Pseudo-random generators for all hardnesses. J. Comput. Syst. Sci., 67(2):419-440, 2003. [doi]
@article{Umans03,
title = {Pseudo-random generators for all hardnesses},
author = {Christopher Umans},
year = {2003},
doi = {10.1016/S0022-0000(03)00046-1},
url = {http://dx.doi.org/10.1016/S0022-0000(03)00046-1},
researchr = {https://researchr.org/publication/Umans03},
cites = {0},
citedby = {0},
journal = {J. Comput. Syst. Sci.},
volume = {67},
number = {2},
pages = {419-440},
}