@article{DAN_1994_336_1_a1,
     author = {V. E. Volkov},
     title = {Fast approximate methods for solving the {Laplace} difference},
     journal = {Doklady Akademii Nauk},
     pages = {11--13},
     year = {1994},
     volume = {336},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_1_a1/}
}