TY - JOUR AU - Konstantinov, M. M. AU - Petkov, P. Hr. AU - Christov, N. D. TI - Invariants and canonical forms for linear multivariable systems under the action of orthogonal transformation groups JO - Kybernetika PY - 1981 SP - 413 EP - 424 VL - 17 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1981__17_5_a6/ LA - en ID - KYB_1981__17_5_a6 ER -