%0 Journal Article %A Yu. N. Protas %T Quasiclassical asymptotics of the scattering amplitude for the scattering of a~plane wave by inhomogeneities of the medium %J Sbornik. Mathematics %D 1983 %P 487-506 %V 45 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1983_45_4_a5/ %G en %F SM_1983_45_4_a5