@article{DE_1980_16_7_a1,
     author = {V. B. Andreev},
     title = {Grid approximations of nonsmooth solutions of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1172--1184},
     publisher = {mathdoc},
     volume = {16},
     number = {7},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_7_a1/}
}