@article{RM_1963_18_2_a16,
     author = {N. Ya. Vilenkin},
     title = {Hypergeometric function and representations of groups of real unimodular $2\times2$-matrices},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1963},
     volume = {18},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_2_a16/}
}