%0 Journal Article %A Tim Carlson %A Richard Laver %T Sacks reals and Martin's axiom %J Fundamenta Mathematicae %D 1989 %P 161-168 %V 133 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-133-2-161-168/ %R 10.4064/fm-133-2-161-168 %G en %F 10_4064_fm_133_2_161_168