@book{54259,
	author = {Sengupta, Atanu. and Pal, Tapan Kumar.},
	title = {Fuzzy preference ordering of interval numbers in decision problems /},
	publisher = {Springer,},
	year = {c2009},
	series = {Studies in Fuzziness and Soft Computing ; 238},
	address = {Berlin :},
	url = {http://www.loc.gov/catdir/enhancements/fy1011/2008941013-d.html}
}