@article{ZNSL_2023_522_a4,
     author = {V. I. Kopeiko},
     title = {On the structure of some unitary nil $K_1$-groups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {84--100},
     publisher = {mathdoc},
     volume = {522},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2023_522_a4/}
}