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@article{DE_1976_12_9_a9, author = {V. A. Kostin}, title = {The smoothness of the solutions of certain equations of parabolic type. {II}}, journal = {Differencialʹnye uravneni\^a}, pages = {1619--1624}, publisher = {mathdoc}, volume = {12}, number = {9}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_9_a9/} }
V. A. Kostin. The smoothness of the solutions of certain equations of parabolic type. II. Differencialʹnye uravneniâ, Tome 12 (1976) no. 9, pp. 1619-1624. http://geodesic.mathdoc.fr/item/DE_1976_12_9_a9/