TY - JOUR AU - Şefik, Ayla AU - Sezer, Mesut Erol TI - A structural analysis of the pole shifting problem JO - Kybernetika PY - 1991 SP - 333 EP - 344 VL - 27 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1991__27_4_a5/ LA - en ID - KYB_1991__27_4_a5 ER -