%0 Journal Article %A S. Z. Djamalov %T On the smoothness of the solution of a nonlocal boundary value problem for the multidimensional second-order equation of the mixed type of the second kind in Sobolev space %J Žurnal Srednevolžskogo matematičeskogo obŝestva %D 2019 %P 24-33 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SVMO_2019_21_1_a1/ %G ru %F SVMO_2019_21_1_a1