@article{DE_1998_34_12_a13,
     author = {G. I. Shishkin},
     title = {Grid approximation of singularly perturbed systems of elliptic and parabolic equations with convective terms},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1686--1696},
     publisher = {mathdoc},
     volume = {34},
     number = {12},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_12_a13/}
}