%0 Journal Article
%A A. Mielke
%T Necessary and Sufficient Conditions for Polyconvexity of Isotropic Functions
%J Journal of convex analysis
%D 2005
%P 291-314
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JCA_2005_12_2_JCA_2005_12_2_a3/
%F JCA_2005_12_2_JCA_2005_12_2_a3