@book{60817,
	author = {Hiller, Frederick S.},
	title = {Introduction to operations research /},
	publisher = {Tata McGraw-Hill },
	year = {2012},
	address = {New Delhi},
	edition = {9th ed},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/ecip0827/2008039045.html}
}