TY - JOUR AU - Kučera, Vladimír TI - Special issue: System Structure and Control. II JO - Kybernetika PY - 1991 SP - 281 VL - 27 IS - 4 UR - http://geodesic.mathdoc.fr/item/KYB_1991_27_4_a0/ LA - en ID - KYB_1991_27_4_a0 ER -