@article{DAN_1994_337_4_a4,
     author = {V. S. Ryaben'kii and V. A. Torgashov},
     title = {The method of difference potentials for the numerical solution of},
     journal = {Doklady Akademii Nauk},
     pages = {450--453},
     publisher = {mathdoc},
     volume = {337},
     number = {4},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_337_4_a4/}
}