@book{1202,
	author = {Gupta, Prem Kumar and Hira, D S},
	title = {Operations Research},
	publisher = {S Chand & Company Pvt. Ltd., New Delhi},
	year = {2017,c2014},
	address = {New  Delhi},
	note = {For Engineering Computer Science, Commerce & Management Economics, Statistics, Mathematics, C.A., I.C.W.A., C.S.. Also useful for I.A.S. & Other Competitive Examinations.}
}