%0 Journal Article %A V. S. Rykhlov %T Solvability of the mixed problem for a hyperbolic equation in the case of incomplete system of eigenfunctions %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2021 %P 95-104 %V 200 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2021_200_a10/ %G ru %F INTO_2021_200_a10