%0 Journal Article %A A. L. Vol'berg %A M. Z. Solomyak %T Multiplicity of the spectrum of Toeplitz operators, weighted cocycles and the vector Riemann problem %J Funkcionalʹnyj analiz i ego priloženiâ %D 1987 %P 1-10 %V 21 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1987_21_3_a0/ %G ru %F FAA_1987_21_3_a0