TY - JOUR AU - Eliopoulou, Helen AU - Karcanias, Nicos TI - Properties of reachability and almost reachability subspaces of implicit systems: The extension problem JO - Kybernetika PY - 1995 SP - 530 EP - 540 VL - 31 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1995__31_6_a1/ LA - en ID - KYB_1995__31_6_a1 ER -