TY - JOUR AU - V. I. Liberzon AU - V. S. Shul'man TI - Nondegenerate operator algebras in spaces with an indefinite metric JO - Izvestiya. Mathematics PY - 1973 SP - 529 EP - 534 VL - 7 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1973_7_3_a3/ LA - en ID - IM2_1973_7_3_a3 ER -