@article{DE_1993_29_1_a21,
     author = {A. E. Zernov},
     title = {Approximation of the solution of an initial-value problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {168--169},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_1_a21/}
}