@conference {GruberPeckham2008Geomorphometry,
	title = {Land-Surface Parameters and Objects in Hydrology},
	booktitle = {Geomorphometry: Geomorphometry: Concepts, Software, Applications},
	series = {Developments in Soil Science},
	volume = {33},
	year = {2008},
	pages = {171{\textendash}194},
	publisher = {Elsevier},
	organization = {Elsevier},
	author = {Gruber, S. and Peckham, S.},
	editor = {Hengl, T. and Reuter, H.I.}
}