@article{DAN_1971_200_1_a8,
     author = {S. I. Serdyukova},
     title = {On stability of the first boundary value problem involving points of the spectrum on the unit circle},
     journal = {Doklady Akademii Nauk},
     pages = {39--42},
     publisher = {mathdoc},
     volume = {200},
     number = {1},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_1_a8/}
}