%0 Journal Article %A Ch. Athanasiadis %T Acoustic Scattering Theory for a Multi-Layered Scatterer in Low-Frequency %J Mathematica balkanica %D 1989 %P 337 %V 3 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1989_3_3-4_a9/ %F MABA_1989_3_3-4_a9