@inbook {Hengl2010Geomap, title = {{Semi-automated identification and extraction of geomorphological features using digital elevation data}}, booktitle = {Geomorphological Mapping: a professional handbook of techniques and applications}, series = {Developments in Earth Surface Processes}, year = {2010}, pages = {in progress}, publisher = {Elsevier}, organization = {Elsevier}, address = {Amsterdam}, author = {Seijmonsbergen, A.C. and Hengl, T. and Anders, N.S.}, editor = {Smith, M.J. and Paron, P. and Griffiths, J.} }