@article{FAA_1970_4_1_a10,
     author = {V. M. Brodskii and I. Ts. Gokhberg and M. G. Krein},
     title = {Determination and fundamental properties of the characteristic function of $\mathcal{Y}$-node},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {88--90},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1970_4_1_a10/}
}