TY - JOUR AU - Thi, Hoang Van TI - Approximate controllability for systems described by right invertible operators JO - Control and Cybernetics PY - 2008 SP - 39 EP - 50 VL - 37 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CC_2008_37_1_a2/ LA - en ID - CC_2008_37_1_a2 ER -