TY - JOUR AU - Kučera, Vladimír TI - Special issue: System Structure and Control. II JO - Kybernetika PY - 1993 SP - 517 VL - 29 IS - 6 UR - http://geodesic.mathdoc.fr/item/KYB_1993_29_6_a0/ LA - en ID - KYB_1993_29_6_a0 ER -