%0 Journal Article
%A V. L. Rvachev
%A G. P. Borodai
%T On the approximate solution of spatial problems of the theory of elasticity for piecewise homogeneous bodies by the method of $R$-functions
%J Doklady Akademii Nauk
%D 1979
%P 818-821
%V 247
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1979_247_4_a13/
%G ru
%F DAN_1979_247_4_a13