TY - JOUR AU - Tan, Kanghai AU - Yang, Xiaoping TI - Subriemannian geodesics of Carnot groups of step 3 JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2013 SP - 274 EP - 287 VL - 19 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/cocv/2012006/ DO - 10.1051/cocv/2012006 LA - en ID - COCV_2013__19_1_274_0 ER -