@book{195213,
	author = {Christensen, Victoria G. and Payne, G. A. and United States},
	title = {Effects of changes in reservoir operations on water quality and trophic state indicators in Voyageurs National Park, northern Minnesota, 2001-03},
	publisher = {U.S. Dept. of the Interior, U.S. Geological Survey},
	year = {2004.},
	series = {Scientific investigations report},
	address = {Reston, Va.},
	note = {Shipping list no.: 2005-0054-M.},
	url = {http://purl.access.gpo.gov/GPO/LPS52205}
}