@article{FAA_2014_48_3_a7,
     author = {A. S. Kostenko},
     title = {Spectral {Analysis} of {Indefinite} {Sturm{\textendash}Liouville} {Operators}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {88--92},
     year = {2014},
     volume = {48},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2014_48_3_a7/}
}