@article{DAN_1964_154_4_a3,
     author = {V. V. Ignatenko},
     title = {A power expansion for one-dimensional boundary-value problems},
     journal = {Doklady Akademii Nauk},
     pages = {760--762},
     publisher = {mathdoc},
     volume = {154},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_4_a3/}
}