@article{DAN_1957_112_2_a1,
     author = {B. M. Budak},
     title = {On the straight line method for certain boundary problems involving systems of partial differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {187--190},
     publisher = {mathdoc},
     volume = {112},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_2_a1/}
}