@article{SM_1999_190_7_a3,
     author = {A. Yu. Plakhov and A. M. Stepin},
     title = {Scattering in multiparticle and billiard dynamical systems},
     journal = {Sbornik. Mathematics},
     pages = {1005--1033},
     publisher = {mathdoc},
     volume = {190},
     number = {7},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1999_190_7_a3/}
}