%0 Journal Article %A A. B. Akimov %A B. A. Iskenderov %T The limit absorption principle, the limit amplitude principle and partial radiation conditions for a boundary value problem in an $n$-dimensional layer for the Helmholtz equation %J Differencialʹnye uravneniâ %D 1977 %P 1503-1505 %V 13 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_8_a17/ %G ru %F DE_1977_13_8_a17