@book{103871,
	author = {Kl�opffer, Walter, and Grahl, Birgit,},
	title = {Life cycle assessment :},
	publisher = {Wiley-VCH,},
	year = {2014.},
	address = {Weinheim an der Bergstrasse, Germany :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10855742}
}