@article{DAN_1966_171_5_a12,
     author = {S. S. Sannikov},
     title = {Expansion of the direct product of representations of the discrete unitary series $D_\lambda^+$ 
},
     journal = {Doklady Akademii Nauk},
     pages = {1058--1060},
     publisher = {mathdoc},
     volume = {171},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_5_a12/}
}