%0 Journal Article
%A P. Pedregal
%A V. Sverak
%T A Note on Quasiconvexity and Rank-One Convexity for 2x2 Matrices
%J Journal of convex analysis
%D 1998
%P 107-118
%V 5
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JCA_1998_5_1_a7/
%F JCA_1998_5_1_a7