@book{22387,
	author = {Timmons, Daniel L. and Johnson, Catherine W.,},
	title = {Fundamentals of algebraic modeling :},
	publisher = {Brooks/Cole,},
	year = {c2006.},
	address = {Belmont, CA :},
	edition = {4th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1103/2004108906-b.html}
}