TY  - JOUR
AU  - Bevan, Jonathan
TI  - An example of a C1,1 polyconvex function with no differentiable convex representative
JO  - Comptes Rendus. Mathématique
PY  - 2003
SP  - 11
EP  - 14
VL  - 336
IS  - 1
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/S1631-073X(02)00015-8/
DO  - 10.1016/S1631-073X(02)00015-8
LA  - en
ID  - CRMATH_2003__336_1_11_0
ER  -