@article{DAN_1957_114_6_a1,
     author = {N. S. Bakhvalov},
     title = {Construction of difference equations for an approximate solution of {Laplace's} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1146--1148},
     publisher = {mathdoc},
     volume = {114},
     number = {6},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_6_a1/}
}