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@article{DE_1987_23_6_a20, author = {S. Ya. L'vin}, title = {Overdetermined boundary value problems}, journal = {Differencialʹnye uravneni\^a}, pages = {1081--1084}, publisher = {mathdoc}, volume = {23}, number = {6}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_6_a20/} }
S. Ya. L'vin. Overdetermined boundary value problems. Differencialʹnye uravneniâ, Tome 23 (1987) no. 6, pp. 1081-1084. http://geodesic.mathdoc.fr/item/DE_1987_23_6_a20/