@article{FAA_1991_25_2_a5,
     author = {V. F. Veselov},
     title = {Regular factorizations of a characteristic function and singular operator-functions},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {58--60},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1991_25_2_a5/}
}