%0 Journal Article %A D. A. Tursunov %A M. O. Orozov %T Asymptotic solution of the Dirichlet problem for a ring, when the corresponding unperturbed equation has a regular special circle %J Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika %D 2020 %P 37-46 %N 63 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTGU_2020_63_a3/ %G ru %F VTGU_2020_63_a3