@article{ZVMMF_1978_18_2_a22,
     author = {K. G. Val\={e}\={e}v},
     title = {A numerical construction of {Ljapunov} functions for difference equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {494--499},
     year = {1978},
     volume = {18},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1978_18_2_a22/}
}