%0 Journal Article %A V. A. Kirichek %T On smoothness of solution of one nonlocal problem for hyperbolic equation %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2020 %P 15-22 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2020_26_2_a1/ %G ru %F VSGU_2020_26_2_a1