@article{DE_2004_40_7_a4,
     author = {V. B. Andreev},
     title = {On the {Theory} of {Difference} {Schemes} for {Singularly} {Perturbed} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {898--907},
     publisher = {mathdoc},
     volume = {40},
     number = {7},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_7_a4/}
}