%0 Journal Article %A I. M. Spitkovsky %T Factorization of measurable matrix-valued functions and related problems in the theory of systems of singular integral equations and the vector Riemann boundary %J Differencialʹnye uravneniâ %D 1982 %P 487-498 %V 18 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_3_a11/ %G ru %F DE_1982_18_3_a11