TY - JOUR AU - A. L. Vol'berg AU - M. Z. Solomyak TI - Multiplicity of the spectrum of Toeplitz operators, weighted cocycles and the vector Riemann problem JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1987 SP - 1 EP - 10 VL - 21 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1987_21_3_a0/ LA - ru ID - FAA_1987_21_3_a0 ER -