@article{DE_1982_18_7_a22,
     author = {G. Stoyan},
     title = {Monotone difference approximation of a partial differential equation with a three-dimensional variable},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1257--1270},
     publisher = {mathdoc},
     volume = {18},
     number = {7},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_7_a22/}
}