%0 Journal Article %A Atalla, Robert E. %T On the non-measurability of a certain mapping %J Compositio Mathematica %D 1970 %P 137-141 %V 22 %N 1 %I Wolters-Noordhoff Publishing %U http://archive.numdam.org/item/CM_1970__22_1_137_0/ %G en %F CM_1970__22_1_137_0