%0 Journal Article %A Roy O. Davies %T Two counterexamples concerning Hausdorff dimensions of projections %J Colloquium Mathematicum %D 1979 %P 53-58 %V 42 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-42-1-53-58/ %R 10.4064/cm-42-1-53-58 %G en %F 10_4064_cm_42_1_53_58