@article{DAN_1979_248_1_a5,
     author = {I. N. Gurova},
     title = {On a topological method of studying difference schemes},
     journal = {Doklady Akademii Nauk},
     pages = {25--28},
     year = {1979},
     volume = {248},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_248_1_a5/}
}