@article{DE_1982_18_7_a14,
     author = {I. E. Kaporin and E. S. Nikolaev},
     title = {The fictitious unknowns-conjugate directions method for difference elliptic problem with variable coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1202--1207},
     publisher = {mathdoc},
     volume = {18},
     number = {7},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_7_a14/}
}