@book{1172,
	author = {Pindyck, Robert S. and Rubinfeld, Daniel L.},
	title = {Microeconomics /},
	publisher = {Macmillan ;},
	year = {[1988], �1989.},
	address = {New York :},
	url = {http://www.gbv.de/dms/bowker/toc/9780023958106.pdf}
}