@article{ZVMMF_1988_28_1_a18,
     author = {Yu. R. Batyuk and M. S. Syavavko and V. G. Shibanov},
     title = {Rational approximations of the evolution operator},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {149--151},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1988_28_1_a18/}
}