@article{DAN_1986_287_1_a0,
     author = {A. A. Alekseev},
     title = {Stability of the inverse {Sturm{\textendash}Liouville} problem for a finite interval},
     journal = {Doklady Akademii Nauk},
     pages = {11--13},
     year = {1986},
     volume = {287},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_287_1_a0/}
}