@article{DAN_1979_247_4_a13,
     author = {V. L. Rvachev and G. P. Borodai},
     title = {On the approximate solution of spatial problems of the theory of elasticity for piecewise homogeneous bodies by the method of $R$-functions},
     journal = {Doklady Akademii Nauk},
     pages = {818--821},
     publisher = {mathdoc},
     volume = {247},
     number = {4},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_4_a13/}
}