@article{DE_1996_32_5_a14,
     author = {V. N. Sushch},
     title = {The {Poisson} difference equation on a curvilinear grid},
     journal = {Differencialʹnye uravneni\^a},
     pages = {684--688},
     year = {1996},
     volume = {32},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_5_a14/}
}