TY - JOUR AU - V. V. Shumilova TI - Spectrum of natural vibrations of a layered medium consisting of a Kelvin--Voigt material and a viscous incompressible fluid JO - Sibirskie èlektronnye matematičeskie izvestiâ PY - 2020 SP - 21 EP - 31 VL - 17 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SEMR_2020_17_a116/ LA - ru ID - SEMR_2020_17_a116 ER -