@book{487586,
	author = {Cooley, Richard L. },
	title = {A theory for modeling ground-water flow in heterogeneous media /},
	publisher = { U.S. Dept. of the Interior, U.S. Geological Survey,},
	year = {2004.},
	series = {U.S. Geological Survey professional paper :},
	address = {Reston, Va. :}
}