@article{FAA_1971_5_4_a19,
     author = {D. F. Kharazov},
     title = {Theory of symmetrizable operators with discrete spectrum},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {87--88},
     year = {1971},
     volume = {5},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1971_5_4_a19/}
}