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@article{DAN_1964_159_5_a13, author = {N. E. Tovmasyan}, title = {The {Dirichlet} problem for an elliptic system of second-order differential equations}, journal = {Doklady Akademii Nauk}, pages = {995--998}, publisher = {mathdoc}, volume = {159}, number = {5}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_5_a13/} }
N. E. Tovmasyan. The Dirichlet problem for an elliptic system of second-order differential equations. Doklady Akademii Nauk, Tome 159 (1964) no. 5, pp. 995-998. http://geodesic.mathdoc.fr/item/DAN_1964_159_5_a13/