%0 Journal Article %A I. V. Frankina %T On the equilibrium problem for a two-layer structure with the upper layer covering a defect tip %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2020 %P 141-160 %V 17 %I mathdoc %U http://geodesic.mathdoc.fr/item/SEMR_2020_17_a80/ %G ru %F SEMR_2020_17_a80