@article{DE_2000_36_3_a7,
     author = {L. Z. Fishman},
     title = {Properties of differential and approximate finite-difference equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {359--364},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_3_a7/}
}