@article{FAA_1989_23_2_a16,
     author = {M. M. Faddeev},
     title = {Similarity of an operator to an isometric operator},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {77--78},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1989_23_2_a16/}
}