%0 Journal Article %A N. O. Ivanov %T Smoothness of generalized solutions of a boundary-value problem for a second-order differential-difference equation with mixed boundary conditions %J Contemporary Mathematics. Fundamental Directions %D 2023 %P 399-417 %V 69 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2023_69_3_a1/ %G ru %F CMFD_2023_69_3_a1