@inbook {Hengl2006Accuracy,
	title = {{Maps are not what they seem: representing uncertainty in soil-property maps}},
	booktitle = {Proceedings of the 7th International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences (Accuracy 2006)},
	year = {2006},
	pages = {805-813},
	publisher = {Instituto Geogr{\'a}phico Portugu{\^e}s},
	organization = {Instituto Geogr{\'a}phico Portugu{\^e}s},
	address = {Lisbon, Portugal},
	author = {Hengl, T. and Toomanian, N.},
	editor = {Caetano, M. and Painho, M.}
}