%0 Journal Article %A Keith Devlin %T Reduced powers of $ℵ_2$-trees %J Fundamenta Mathematicae %D 1983 %P 129-134 %V 118 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-118-2-129-134/ %R 10.4064/fm-118-2-129-134 %G en %F 10_4064_fm_118_2_129_134