@article {le1992interpolation,
	title = {Interpolation with uncertain spatial covariances: a Bayesian alternative to kriging},
	journal = {Journal of Multivariate Analysis},
	volume = {43},
	number = {2},
	year = {1992},
	pages = {351{\textendash}374},
	publisher = {Elsevier},
	author = {Le, Nhu D. and Zidek, James V}
}
