@article{DAN_1996_351_2_a2,
     author = {P. P. Kargaev and E. L. Korotyaev},
     title = {Inverse problems for the {Hill} operator, the direct approach},
     journal = {Doklady Akademii Nauk},
     pages = {158--160},
     publisher = {mathdoc},
     volume = {351},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_351_2_a2/}
}