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@article{TRSPY_1973_125_a2, author = {A. V. Ivanov}, title = {The solvability of the {Dirichlet} problem for certain classes of second order elliptic systems}, journal = {Informatics and Automation}, pages = {56--87}, publisher = {mathdoc}, volume = {125}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1973_125_a2/} }
A. V. Ivanov. The solvability of the Dirichlet problem for certain classes of second order elliptic systems. Informatics and Automation, Boundary value problems of mathematical physics. Part 8, Tome 125 (1973), pp. 56-87. http://geodesic.mathdoc.fr/item/TRSPY_1973_125_a2/