@article{DE_1981_17_7_a2,
     author = {V. B. Andreev},
     title = {On the accuracy of modified difference and finite-element schemes for a model problem on cracks},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1184--1192},
     publisher = {mathdoc},
     volume = {17},
     number = {7},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_7_a2/}
}