TY - JOUR AU - Koenig, Armand TI - Non-null-controllability of the Grushin operator in 2D JO - Comptes Rendus. Mathématique PY - 2017 SP - 1215 EP - 1235 VL - 355 IS - 12 PB - Elsevier UR - http://www.numdam.org/articles/10.1016/j.crma.2017.10.021/ DO - 10.1016/j.crma.2017.10.021 LA - en ID - CRMATH_2017__355_12_1215_0 ER -