@article{FAA_2017_51_2_a3,
     author = {Yu. A. Neretin},
     title = {Multiplication of conjugacy classes, colligations, and characteristic functions of matrix argument},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {25--41},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2017_51_2_a3/}
}