@book{6289,
	author = {Gupta, Prem Kumar. and D.S Hira},
	title = {Problems in Operations Research: Principles and Solutions},
	publisher = {S Chand & Co Ltd,},
	year = {2007.},
	address = {New Delhi:},
	url = {http://10.10.170.122:8080/browse/book/13489}
}