%0 Journal Article %A S. Z. Djamalov %A B. K. Sipatdinova %T On a nonlocal boundary value problem of periodic type for the three-dimensional mixed-type equations of the second kind in an infinite parallelepiped %J Vestnik KRAUNC. Fiziko-matematičeskie nauki %D 2023 %P 58-68 %V 42 %N 1 %U http://geodesic.mathdoc.fr/item/VKAM_2023_42_1_a3/ %G ru %F VKAM_2023_42_1_a3