%0 Journal Article %A Kreiner, Carl-Friedrich %A Zimmer, Johannes %T Topology and geometry of nontrivial rank-one convex hulls for two-by-two matrices %J ESAIM: Control, Optimisation and Calculus of Variations %D 2006 %P 253-270 %V 12 %N 2 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/cocv:2005036/ %R 10.1051/cocv:2005036 %G en %F COCV_2006__12_2_253_0