@article{DAN_1957_113_6_a4,
     author = {V. I. Lebedev},
     title = {Method of orthogonal projections for a finite difference analogue of a system of equations},
     journal = {Doklady Akademii Nauk},
     pages = {1206--1209},
     publisher = {mathdoc},
     volume = {113},
     number = {6},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_6_a4/}
}