Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1979_15_5_a6, author = {I. \`El'shner}, title = {A difference method for degenerate ordinary differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {828--839}, publisher = {mathdoc}, volume = {15}, number = {5}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_5_a6/} }
I. Èl'shner. A difference method for degenerate ordinary differential equations. Differencialʹnye uravneniâ, Tome 15 (1979) no. 5, pp. 828-839. http://geodesic.mathdoc.fr/item/DE_1979_15_5_a6/