@article{SM_2003_194_4_a2,
     author = {Yu. A. Neretin},
     title = {Rayleigh triangles and non-matrix interpolation of matrix beta integrals},
     journal = {Sbornik. Mathematics},
     pages = {515--540},
     year = {2003},
     volume = {194},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2003_194_4_a2/}
}