@article{TMF_1976_29_3_a6,
     author = {V. S. Popov},
     title = {New expressions for the invariant operators of the unitary groups},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {357--369},
     year = {1976},
     volume = {29},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1976_29_3_a6/}
}