@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/}
}