@book{53109,
	author = {Kirkup, Les. and Frenkel, Bob.},
	title = {An introduction to uncertainty in measurement using the GUM (guide to the expression of uncertainty in measurement) /},
	publisher = {Cambridge University Press,},
	year = {2006},
	address = {Cambridge, UK ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0668/2006298202-d.html}
}