%0 Journal Article %A S. V. Uspenskii %A E. N. Vasil'eva %A S. I. Yanov %T Differential Properties of the Solution to the First Mixed Boundary Value Problem for the Sobolev System %J Informatics and Automation %D 1999 %P 311-319 %V 227 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1999_227_a21/ %G ru %F TRSPY_1999_227_a21