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@article{DE_1985_21_1_a21, author = {A. Yu. Berezin}, title = {A problem with an oblique derivative for an elliptic system}, journal = {Differencialʹnye uravneni\^a}, pages = {158--161}, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_1_a21/} }
A. Yu. Berezin. A problem with an oblique derivative for an elliptic system. Differencialʹnye uravneniâ, Tome 21 (1985) no. 1, pp. 158-161. http://geodesic.mathdoc.fr/item/DE_1985_21_1_a21/