%0 Journal Article %A H. A. Helfgott %T On the square-free sieve %J Acta Arithmetica %D 2004 %P 349-402 %V 115 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa115-4-3/ %R 10.4064/aa115-4-3 %G en %F 10_4064_aa115_4_3