@article {zidek1998imputing,
	title = {Imputing unmeasured explanatory variables in environmental epidemiology with application to health impact analysis of air pollution},
	journal = {Environmental and Ecological Statistics},
	volume = {5},
	number = {2},
	year = {1998},
	pages = {99{\textendash}105},
	publisher = {Springer},
	author = {Zidek, J.V. and White, R and Sun, W and Burnett, RT and Le, N.D.}
}
