@book{146383,
	author = {Appel, Charles A. and Reilly, Thomas E.},
	title = {Summary of selected computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality, 1994},
	publisher = {U.S. G.P.O.},
	year = {1994.},
	series = {U.S. Geological Survey circular},
	address = {Washington, D.C.}
}