@article{ZVMMF_1962_2_4_a4,
     author = {N. S. Bakhvalov},
     title = {On optimal methods of specifying information during the solution of differential equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {569--592},
     year = {1962},
     volume = {2},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1962_2_4_a4/}
}