@article{
author = {Uriel Feige and  Eran Ofek},
title = {Easily refutable subformulas of large random 3CNF formulas},
journal = {Theory of Computing},
year = {2007},
volume = {3},
number = {1},
pages = {25-43},
publisher = {Theory of Computing},
eprint = {toc:v003/a002},
URL = {http://www.theoryofcomputing.org/articles/main/v003/a002},
}