@book{132884,
	author = {Sydsæter, Knut. and Hammond, Peter J.,},
	title = {Essential mathematics for economic analysis /},
	publisher = {FT Prentice Hall,},
	year = {2006.},
	address = {Harlow, England ;},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/fy0603/2005051112.html}
}