Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1984_20_11_a20, author = {L. P. Gaifullina}, title = {An approximate method for solving elliptic equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1992--1993}, publisher = {mathdoc}, volume = {20}, number = {11}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_11_a20/} }
L. P. Gaifullina. An approximate method for solving elliptic equations. Differencialʹnye uravneniâ, Tome 20 (1984) no. 11, pp. 1992-1993. http://geodesic.mathdoc.fr/item/DE_1984_20_11_a20/