TY - JOUR AU - Mihaela Negreanu AU - Enrique Zuazua TI - Convergence of a multigrid method for the controllability of a 1-d wave equation JO - Comptes Rendus. Mathématique PY - 2004 SP - 413 EP - 418 VL - 338 IS - 5 PB - Elsevier DO - 10.1016/j.crma.2003.11.032 LA - en ID - CRMATH_2004__338_5_413_0 ER -