@mastersthesis {35850,
	title = {DEM drainage as ancillary data to enhance digital LANDSAT classification accuracies},
	volume = {Geography},
	year = {1988},
	address = {University of Alberta},
	isbn = {0315428392 9780315428393},
	url = {http://search.proquest.com/docview/252090105},
	author = {Niemann, Kniu Olaf}
}
