%0 Journal Article %A Beauchard, Karine %A Helffer, Bernard %A Henry, Raphael %A Robbiano, Luc %T Degenerate parabolic operators of Kolmogorov type with a geometric control condition %J ESAIM: Control, Optimisation and Calculus of Variations %D 2015 %P 487-512 %V 21 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/cocv/2014035/ %R 10.1051/cocv/2014035 %G en %F COCV_2015__21_2_487_0