@article {Hengl2008Compgeosci,
	title = {{Geostatistical modelling of topography using auxiliary maps}},
	journal = {Computers \& Geosciences},
	volume = {34},
	year = {2008},
	pages = {1886-1899},
	author = {Hengl, T. and Bajat, B. and Reuter, H.I. and Blagojevi{\'c}, D.}
}