TY - JOUR AU - L. A. Sakhnovich TI - Factorization problems and operator identities JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1986 SP - 1 EP - 64 VL - 41 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1986_41_1_a0/ LA - en ID - RM_1986_41_1_a0 ER -