@article{DAN_1984_276_5_a10,
     author = {Ya. T. Sultanaev},
     title = {Deficiency indices and the spectrum of the nonsemibounded {Sturm--Liouville} operator},
     journal = {Doklady Akademii Nauk},
     pages = {1072--1074},
     publisher = {mathdoc},
     volume = {276},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_276_5_a10/}
}