Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1976_12_3_a13, author = {I. V. Fryazinov}, title = {A certain difference approximation of the {Poisson} equation}, journal = {Differencialʹnye uravneni\^a}, pages = {540--548}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_3_a13/} }
I. V. Fryazinov. A certain difference approximation of the Poisson equation. Differencialʹnye uravneniâ, Tome 12 (1976) no. 3, pp. 540-548. http://geodesic.mathdoc.fr/item/DE_1976_12_3_a13/