@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/}
}