@article{ZVMMF_1973_13_3_a10,
     author = {S. G. Krein and L. N. \v{S}ablickaja},
     title = {Necessary conditions for the stability of difference schemes, and the eigenvalues of difference operators},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {647--657},
     year = {1973},
     volume = {13},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1973_13_3_a10/}
}