@article{SM_1990_65_1_a12,
     author = {V. V. Sukhanov},
     title = {An inverse problem for a~selfadjoint differential operator on the line},
     journal = {Sbornik. Mathematics},
     pages = {249--266},
     publisher = {mathdoc},
     volume = {65},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1990_65_1_a12/}
}