@article{DAN_1960_131_2_a13,
     author = {I. A. Shishmarev},
     title = {A priori estimation of solutions to the {Dirichlet} problem for an elliptic operator with discontinuous coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {269--272},
     publisher = {mathdoc},
     volume = {131},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a13/}
}