@book{19252,
	author = {Kozlov, Valerii V. and Treshchev, Dmitrii V. and Treshchev, Dmitrii V.; jt.auth},
	title = {Billiards ; a genetic introduction to the dynamics of systems with impacts},
	publisher = {American Mathematical Society},
	year = {1991},
	series = {Translations of Mathematical monographs},
	address = {Providence},
	note = {"Purchased under NBHM grant for the year 1999-2000"}
}