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@article{DAN_1973_212_5_a10, author = {R. S. Saks}, title = {Boundary value problems for certain systems that are reducible to elliptic systems}, journal = {Doklady Akademii Nauk}, pages = {1067--1070}, publisher = {mathdoc}, volume = {212}, number = {5}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_5_a10/} }
R. S. Saks. Boundary value problems for certain systems that are reducible to elliptic systems. Doklady Akademii Nauk, Tome 212 (1973) no. 5, pp. 1067-1070. http://geodesic.mathdoc.fr/item/DAN_1973_212_5_a10/