@article {Lark2005EJSS,
	title = {{On Spatial Prediction of Soil Properties in the Presence of a Spatial Trend: The Empirical Best Linear Unbiased Predictor (E-BLUP) with REML}},
	journal = {European Journal of Soil Science},
	volume = {57},
	year = {2005},
	pages = {787-799},
	author = {Lark, R.~M. and Cullis, B. and Welham, S.~J.}
}