@article{DAN_1988_299_2_a9,
     author = {O. V. Epifanov and O. N. Popov and A. Ya. Tsionskii},
     title = {Justification of the method of eigenforms for solving problems of},
     journal = {Doklady Akademii Nauk},
     pages = {301--304},
     publisher = {mathdoc},
     volume = {299},
     number = {2},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_2_a9/}
}