%0 Journal Article %A V. L. Rvachev %A N. S. Sinekop %T Convolution formulas in the method of $R$-functions and their application to the construction of the structures of solutions of boundary-value problems %J Doklady Akademii Nauk %D 1980 %P 80-83 %V 255 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_255_1_a19/ %G ru %F DAN_1980_255_1_a19