@book{18598,
	author = {Kasana, Harvir Singh. and Kumar, Krishna Dev.},
	title = {Introductory operations research :},
	publisher = {Springer,},
	year = {c2003.},
	address = {India :},
	url = {http://www.loc.gov/catdir/enhancements/fy0813/2004106761-d.html}
}