%0 Journal Article %A Cannarsa, Piermarco %A Frankowska, Hélène %T Interior sphere property of attainable sets and time optimal control problems %J ESAIM: Control, Optimisation and Calculus of Variations %D 2006 %P 350-370 %V 12 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/cocv:2006002/ %R 10.1051/cocv:2006002 %G en %F COCV_2006__12_2_350_0