%0 Journal Article %A E. A. Volkov %T On solution of the Laplace equation by the block method on polygons under piecewise constant boundary conditions %J Doklady Akademii Nauk %D 1994 %P 553-555 %V 335 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_335_5_a1/ %G ru %F DAN_1994_335_5_a1