@book{260,
	author = {P, Verma A.},
	title = {Operations Research },
	publisher = {S. K. Kataria & Sons,},
	year = {2010.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8185749248/chopaconline-20}
}