@article {Park2002Geoderma,
	title = {{Environmental correlation of three-dimensional soil spatial variability: a comparison of three adaptive techniques}},
	journal = {Geoderma},
	volume = {109},
	number = {1-2},
	year = {2002},
	pages = {117-140},
	author = {Park, S.~J. and Vlek, P.~L.~G.}
}