@mastersthesis {PIE78,
	title = {Identifying impermeable surface from remotely sensed images},
	volume = {M.S.},
	year = {2002},
	note = {Grad},
	school = {Clark University},
	type = {mastersthesis},
	address = {Worcester},
	keywords = {LTER-PIE, remote sensing, watershed},
	author = {Head, J.}
}
