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@article{DE_1969_5_4_a19, author = {A. S. Tsygankov}, title = {A certain inequality for the solution of the {Dirichlet} problem in a ball}, journal = {Differencialʹnye uravneni\^a}, pages = {768--771}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1969_5_4_a19/} }
A. S. Tsygankov. A certain inequality for the solution of the Dirichlet problem in a ball. Differencialʹnye uravneniâ, Tome 5 (1969) no. 4, pp. 768-771. http://geodesic.mathdoc.fr/item/DE_1969_5_4_a19/