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@article{DE_1989_25_4_a9, author = {V. F. Safonov}, title = {Normal forms and regularization of nonlinear singularly perturbed evolution equations}, journal = {Differencialʹnye uravneni\^a}, pages = {627--635}, publisher = {mathdoc}, volume = {25}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_4_a9/} }
V. F. Safonov. Normal forms and regularization of nonlinear singularly perturbed evolution equations. Differencialʹnye uravneniâ, Tome 25 (1989) no. 4, pp. 627-635. http://geodesic.mathdoc.fr/item/DE_1989_25_4_a9/