@article{DAN_1984_278_3_a4,
     author = {A. A. Kronberg},
     title = {Some algorithms for solving boundary value problems for the},
     journal = {Doklady Akademii Nauk},
     pages = {534--537},
     year = {1984},
     volume = {278},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_278_3_a4/}
}