Geo-Wiki.Org: The Use of Crowdsourcing to Improve Global Land Cover. - Steffen Fritz; Ian McCallum; Christian Schill; Christoph Perger; Roland Grillmayer; Frédéric Achard; Florian Kraxner; Michael Obersteiner (Remote. Sens., 2009)

Building a Crowd-Sourcing Tool for the Validation of Urban Extent and Gridded Population. - Steffen Fritz; Linda M. See; Ian McCallum; Christian Schill; Christoph Perger; Michael Obersteiner (ICCSA (2), 2011)

Geo-Wiki: An online platform for improving global land cover. - Steffen Fritz; Ian McCallum; Christian Schill; Christoph Perger; Linda See; Dmitry Schepaschenko; Marijn Van der Velde; Florian Kraxner; Michael Obersteiner (Environ. Model. Softw., 2012)

Using control data to determine the reliability of volunteered geographic information about land cover. - Alexis J. Comber; Linda M. See; Steffen Fritz; Marijn Van der Velde; Christoph Perger; Giles M. Foody (Int. J. Appl. Earth Obs. Geoinformation, 2013)

Assessing the Accuracy of Volunteered Geographic Information arising from Multiple Contributors to an Internet Based Collaborative Project. - Giles M. Foody; Linda M. See; Steffen Fritz; Marijn Van der Velde; Christoph Perger; Christian Schill; Doreen S. Boyd (Trans. GIS, 2013)

Geography Geo-Wiki in the Classroom: Using Crowdsourcing to Enhance Geographical Teaching. - Christoph Perger; Ellsworth LeDrew; Linda M. See; Steffen Fritz (Future Internet, 2014)

Developing a community-based worldwide urban morphology and materials database (WUDAPT) using remote sensing and crowdsourcing for improved urban climate modelling. - Linda See; Christoph Perger; Martina Dürauer; Steffen Fritz; Benjamin Bechtel; Jason Ching; Paul J. Alexander; Gerald Mills; Micheal Foley; Martin O'Connor; Iain Stewart 001; Johannes Feddema; et al. (JURSE, 2015)

Assessing quality of volunteer crowdsourcing contributions: lessons from the Cropland Capture game. - Carl F. Salk; Tobias Sturn; Linda See; Steffen Fritz; Christoph Perger (Int. J. Digit. Earth, 2016)

Crowdsourcing In-Situ Data on Land Cover and Land Use Using Gamification and Mobile Technology. - Juan Carlos Laso Bayas; Linda See; Steffen Fritz; Tobias Sturn; Christoph Perger; Martina Dürauer; Mathias Karner; Inian Moorthy; Dmitry Schepaschenko; Dahlia Domian; Ian McCallum (Remote. Sens., 2016)

Validation of Automatically Generated Global and Regional Cropland Data Sets: The Case of Tanzania. - Juan Carlos Laso Bayas; Linda See; Christoph Perger; Christina Justice; Catherine Nakalembe; Jan Dempewolf; Steffen Fritz (Remote. Sens., 2017)

LACO-Wiki: A New Online Land Cover Validation Tool Demonstrated Using GlobeLand30 for Kenya. - Linda See; Juan Carlos Laso Bayas; Dmitry Schepaschenko; Christoph Perger; Christopher Dresel; Victor Maus; Carl F. Salk; Jürgen Weichselbaum; Myroslava Lesiv; Ian McCallum; Inian Moorthy; Steffen Fritz (Remote. Sens., 2017)

Assessing and Improving the Reliability of Volunteered Land Cover Reference Data. - Yuanyuan Zhao; Duole Feng; Le Yu 001; Linda See; Steffen Fritz; Christoph Perger; Peng Gong 002 (Remote. Sens., 2017)

Increasing the Accuracy of Crowdsourced Information on Land Cover via a Voting Procedure Weighted by Information Inferred from the Contributed Data. - Giles M. Foody; Linda See; Steffen Fritz; Inian Moorthy; Christoph Perger; Christian Schill; Doreen S. Boyd (ISPRS Int. J. Geo Inf., 2018)

Engaging Citizens in Environmental Monitoring via Gaming. - Ian McCallum; Linda See; Tobias Sturn; Carl F. Salk; Christoph Perger; Martina Dürauer; Mathias Karner; Inian Moorthy; Dahlia Domian; Dmitry Schepaschenko; Steffen Fritz (Int. J. Spatial Data Infrastructures Res., 2018)

Crowd-Driven and Automated Mapping of Field Boundaries in Highly Fragmented Agricultural Landscapes of Ethiopia with Very High Spatial Resolution Imagery. - Michael T. Marshall; Sophie Crommelinck; Divyani Kohli; Christoph Perger; Michael Ying Yang; Aniruddha Ghosh; Steffen Fritz; Kees de Bie; Andy Nelson 001 (Remote. Sens., 2019)