%0 Journal Article %A G. Ch. Shushkevich %A N. N. Kiseleva %T Calculation of the attenuation coefficient of the sound field of a spherical radiator by penetrable spherical shell %J Problemy fiziki, matematiki i tehniki %D 2013 %P 48-54 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2013_1_a8/ %G ru %F PFMT_2013_1_a8