@article{DAN_1996_349_6_a3,
     author = {N. Yu. Kapustin},
     title = {On spectral problems that arise in the theory of the},
     journal = {Doklady Akademii Nauk},
     pages = {736--739},
     publisher = {mathdoc},
     volume = {349},
     number = {6},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_349_6_a3/}
}