@article{ISU_2021_21_4_a5,
     author = {Yu. A. Blinkov and M. D. Malykh and L. A. Sevastianov},
     title = {On differential approximations of difference schemes},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {472--488},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2021_21_4_a5/}
}