@book{56152,
	author = {Albrecht, Jochen,},
	title = {Key concepts & techniques in GIS /},
	publisher = {SAGE Publications,},
	year = {2007.},
	address = {Los Angeles :},
	note = {Published in Thousand Oaks, Calif.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10326966}
}