@book{59911,
	author = {Erickson, Martin J.},
	title = {Aha! Solutions /},
	publisher = {Mathematical Association of America,},
	year = {c2009},
	series = {MAA problem books series},
	address = {Washington, D.C. :},
	url = {http://www.loc.gov/catdir/enhancements/fy1101/2008938665-t.html}
}