%0 Journal Article %A V. V. Shumilova %T Reflection of a plane sound wave from the boundary of a heterogeneous medium consisting of elastic and viscoelastic layers %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 2015 %P 1208-1220 %V 55 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_7_a9/ %G ru %F ZVMMF_2015_55_7_a9