@article{DAN_1968_181_4_a10,
     author = {A. A. Samarskii},
     title = {Necessary and sufficient conditions for the stability of double layer difference schemes},
     journal = {Doklady Akademii Nauk},
     pages = {808--811},
     publisher = {mathdoc},
     volume = {181},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_4_a10/}
}