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@article{DE_1979_15_3_a19, author = {A. V. Knyazev}, title = {The method of frozen coefficients}, journal = {Differencialʹnye uravneni\^a}, pages = {551--552}, publisher = {mathdoc}, volume = {15}, number = {3}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_3_a19/} }
A. V. Knyazev. The method of frozen coefficients. Differencialʹnye uravneniâ, Tome 15 (1979) no. 3, pp. 551-552. http://geodesic.mathdoc.fr/item/DE_1979_15_3_a19/