TY - JOUR AU - S. A. Skobel'tsyn AU - I. S. Fedotov AU - A. S. Titova TI - Diffraction of sound on an elastic sphere with a nonhomogeneous coating and cavity in semi-space JO - Čebyševskij sbornik PY - 2018 SP - 177 EP - 193 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CHEB_2018_19_4_a8/ LA - ru ID - CHEB_2018_19_4_a8 ER -