@article{AA_2009_21_5_a0,
     author = {S. V. Buyalo and A. M. Kuznetsov},
     title = {Boundary at infinity of hyperbolic rank one spaces},
     journal = {Algebra i analiz},
     pages = {3--18},
     year = {2009},
     volume = {21},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2009_21_5_a0/}
}