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@article{DE_1994_30_10_a0, author = {V. A. Baikov and R. K. Gazizov and N. H. Ibragimov}, title = {Approximate equivalence transformations}, journal = {Differencialʹnye uravneni\^a}, pages = {1659--1664}, publisher = {mathdoc}, volume = {30}, number = {10}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1994_30_10_a0/} }
V. A. Baikov; R. K. Gazizov; N. H. Ibragimov. Approximate equivalence transformations. Differencialʹnye uravneniâ, Tome 30 (1994) no. 10, pp. 1659-1664. http://geodesic.mathdoc.fr/item/DE_1994_30_10_a0/