@book{1048,
	author = {Mansfield, Edwin.},
	title = {Microeconomics :},
	publisher = {W.W. Norton,},
	year = {�1994.},
	address = {New York :},
	edition = {8th ed.},
	url = {http://www.gbv.de/dms/bowker/toc/9780393964172.pdf}
}