@book{105886,
	author = {Chambers, Raymond L. and Clark, Robert G.},
	title = {An introduction to model-based survey sampling with applications /},
	publisher = {Oxford University Press,},
	year = {2012.},
	series = {Oxford statistical science series ;},
	address = {Oxford ;},
	url = {http://www.loc.gov/catdir/enhancements/fy1312/2011035840-d.html}
}