TY - JOUR AU - Beauchard, Karine AU - Pravda-Starov, Karel TI - Null-controllability of hypoelliptic quadratic differential equations JO - Journal de l’École polytechnique — Mathématiques PY - 2018 SP - 1 EP - 43 VL - 5 PB - Ecole polytechnique UR - http://archive.numdam.org/articles/10.5802/jep.62/ DO - 10.5802/jep.62 LA - en ID - JEP_2018__5__1_0 ER -