@conference {Papritz2009StatGIS,
	title = {{Limitations of Indicator Kriging for Predicting Data with Trend}},
	booktitle = {StatGIS Conference Proceedings},
	year = {2009},
	pages = {1-6},
	address = {Milos, Greece},
	author = {Papritz, A.},
	editor = {{Cornford, D. } and et al}
}