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Fritz S, See L, McCallum I, Schill C, Obersteiner M, van der Velde M, Bottcher H, Havlik P, Achard F (2011)
Highlighting continued uncertainty in global land cover maps for the user community
Environmental Research Letters, 6(4):044005 (October-December 2011) (Published online 21 October 2011) More
McCallum I, Fritz S, Schill C, Perger C, Achard F, Grillmayer R, Koch B, Kraxner F, Obersteiner M, Quinten M (2010)
Geo-Wiki.org: Harnessing the power of volunteers, the Internet and Google Earth to collect and validate global spatial information
Earthzine, posted on 1 February 2010 in Articles, Earth Observation, Technology More
Fritz S, McCallum I, Schill C, Perger C, Grillmayer R, Achard F, Kraxner F, Obersteiner M (2009)
Geo-Wiki.Org: The use of crowdsourcing to improve global land cover
Remote Sensing, 1(3):345-354 (3 August 2009) More