%0 Journal Article %A B. R. Vainberg %T Principles of radiation, limit absorption and limit amplitude in the general theory of partial differential equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1966 %P 115-193 %V 21 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1966_21_3_a3/ %G en %F RM_1966_21_3_a3