%0 Journal Article %A E. A. Volkov %T On approximate conformal mapping of a~doubly connected polygon onto a~annulus by the block method %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1997 %P 145-163 %V 214 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1997_214_a6/ %G ru %F TM_1997_214_a6