%0 Journal Article %A Xiang Wu %A Song Zhou %T A counterexample in comonotone approximation in $L^p$ space %J Colloquium Mathematicum %D 1993 %P 265-274 %V 64 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-64-2-265-274/ %R 10.4064/cm-64-2-265-274 %G en %F 10_4064_cm_64_2_265_274