@article{DE_1976_12_1_a25,
     author = {G. I. Sulkhanishvili},
     title = {Letter to the editors: {``Difference} schemes of the sixth order of accuracy for a {Poisson} equation of an arbitrary number of dimensions'' {(Differencial'nye} {Uravnenija} \textbf{11} (1975), no.~5, 934--936)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {183},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_1_a25/}
}