@book{196166,
	author = {Swarup, Kanthi. Gupta, P K. Man, Mohan.},
	title = {Operations research : a textbook for students of mathematics, statistics, commerce engineering and management of all Indian universities},
	publisher = {Sultan Chand & Sons},
	year = {1986},
	address = {New Delhi},
	edition = {3rd ed.}
}