Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1959_53_a4, author = {V. P. Il'in}, title = {Estimate of error in the {Ritz} method for ordinary differential equations}, journal = {Informatics and Automation}, pages = {43--63}, publisher = {mathdoc}, volume = {53}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1959_53_a4/} }
V. P. Il'in. Estimate of error in the Ritz method for ordinary differential equations. Informatics and Automation, The works on the approximate analysis, Tome 53 (1959), pp. 43-63. http://geodesic.mathdoc.fr/item/TRSPY_1959_53_a4/