@booklet {liu2008combining,
	title = {Combining measurements and physical model outputs for the spatial prediction of hourly ozone space-time fields},
	number = {239},
	year = {2008},
	publisher = {Department of Statistics, University of British Columbia},
	address = {Vancouver, BC},
	author = {Liu, Zhong and Le, N.D. and Zidek, James V.}
}
