@article{RM_1991_46_4_a1,
     author = {L. A. Bunimovich and Ya. G. Sinai and N. I. Chernov},
     title = {Statistical properties of two-dimensional hyperbolic billiards},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {47--106},
     publisher = {mathdoc},
     volume = {46},
     number = {4},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1991_46_4_a1/}
}