%0 Journal Article %A Tibor Radó %T Lebesgue area and Hausdorff measure %J Fundamenta Mathematicae %D 1957 %P 198-237 %V 44 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-44-2-198-237/ %R 10.4064/fm-44-2-198-237 %G de %F 10_4064_fm_44_2_198_237