@book{30491,
	author = {Saari, Donald G.},
	title = {Collisions, rings, and other newtonian N-body problems},
	publisher = {American Mathematical Society},
	year = {2005},
	series = {Conference Board of the Mathematical Sciences },
	address = {Providence},
	note = {"Purchased under NBHM grant for the year 2008-2009"}
}