@article{TMF_1970_2_3_a4,
     author = {A. N. Leznov and M. V. Saveliev},
     title = {Representation of noncompact groups $U(p,q)$. {I}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {311--327},
     year = {1970},
     volume = {2},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_2_3_a4/}
}