TY - JOUR AU - Axel Osses AU - Jean-Pierre Puel TI - Some extensions of approximate controllability results to inverse problems JO - ESAIM. Proceedings PY - 1997 SP - 133 EP - 143 VL - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/proc:1997017/ DO - 10.1051/proc:1997017 LA - en ID - EP_1997_2_a7 ER -