@article {Walter2001AJSR,
	title = {{Spatial prediction of topsoil salinity in the Chelif valley, Algeria, using local ordinary kriging with local variograms versus whole-area variogram}},
	journal = {Australian Journal of Soil Research},
	volume = {39},
	year = {2001},
	pages = {259-272},
	author = {Walter, C. and McBratney, A.~B. and Donuaoui, A. and Minasny, B.}
}