%0 Journal Article %A B. R. Vainberg %T Asymptotic behavior as~$t\to\infty$ of solutions of exterior mixed problems that are periodic with respect to~$t$ %J Matematičeskie zametki %D 1990 %P 6-16 %V 47 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1990_47_4_a1/ %G ru %F MZM_1990_47_4_a1