@article{FAA_1989_23_3_a5, author = {A. L. Vol'berg and B. M. Solomyak}, title = {Spectral multiplicity of the operator of multiplication by a matrix-valued function}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {55--56}, publisher = {mathdoc}, volume = {23}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1989_23_3_a5/} }