Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1971_7_2_a14, author = {V. D. Charushnikov}, title = {Optimal approximate methods for the solution of linear problems}, journal = {Differencialʹnye uravneni\^a}, pages = {344--352}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_2_a14/} }
V. D. Charushnikov. Optimal approximate methods for the solution of linear problems. Differencialʹnye uravneniâ, Tome 7 (1971) no. 2, pp. 344-352. http://geodesic.mathdoc.fr/item/DE_1971_7_2_a14/