@article {Huerta2004AS,
	title = {{A spatiotemporal model for Mexico City ozone levels}},
	journal = {Applied Statistics},
	volume = {53},
	number = {2},
	year = {2004},
	pages = {231-248},
	author = {Huerta, G. and Sans{\'o}, B. and Stroud, J.R.}
}