%0 Journal Article %A Bevan, Jonathan %T An example of a C1,1 polyconvex function with no differentiable convex representative %J Comptes Rendus. Mathématique %D 2003 %P 11-14 %V 336 %N 1 %I Elsevier %U http://archive.numdam.org/articles/10.1016/S1631-073X(02)00015-8/ %R 10.1016/S1631-073X(02)00015-8 %G en %F CRMATH_2003__336_1_11_0