@article{DAN_1963_149_6_a5,
     author = {V. Ya. Rivkind},
     title = {Estimates for the rate of convergence of solutions of difference equations to solutions of elliptic equations 
},
     journal = {Doklady Akademii Nauk},
     pages = {1264--1267},
     publisher = {mathdoc},
     volume = {149},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_6_a5/}
}