@article{DE_1975_11_5_a21,
     author = {G. I. Sulkhanishvili},
     title = {Difference schemes of the sixth order of accuracy for a {Poisson} equation of an arbitrary number of dimensions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {934--936},
     publisher = {mathdoc},
     volume = {11},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_5_a21/}
}