TY - BOOK AU - Bunimovich,L.A. AU - Szász,D. TI - Hard ball systems and the Lorentz gas T2 - Encyclopaedia of mathematical sciences, Mathematical physics II SN - 3540676201 : U1 - 514.74 21 PY - 2000/// CY - Berlin, London PB - Springer KW - Dynamics KW - Hamiltonian systems N1 - Includes bibliographical references and index ER -