@article{SM_1988_59_1_a0,
     author = {O. A. Plaksina},
     title = {Inverse problems of spectral analysis for the {Sturm{\textendash}Liouville} operators with nonseparated boundary conditions},
     journal = {Sbornik. Mathematics},
     pages = {1--23},
     year = {1988},
     volume = {59},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1988_59_1_a0/}
}