The Street Network Evolution of Crowdsourced Maps: OpenStreetMap in Germany 2007-2011. - Pascal Neis; Dennis Zielstra; Alexander Zipf (Future Internet, 2012)

Comparison of Volunteered Geographic Information Data Contributions and Community Development for Selected World Regions. - Pascal Neis; Dennis Zielstra; Alexander Zipf (Future Internet, 2013)

Assessing the Effect of Data Imports on the Completeness of OpenStreetMap - A United States Case Study. - Dennis Zielstra; Hartwig H. Hochmair; Pascal Neis (Trans. GIS, 2013)

Recent Developments and Future Trends in Volunteered Geographic Information Research: The Case of OpenStreetMap. - Pascal Neis; Dennis Zielstra (Future Internet, 2014)

Areal Delineation of Home Regions from Contribution and Editing Patterns in OpenStreetMap. - Dennis Zielstra; Hartwig H. Hochmair; Pascal Neis; Francesco Tonini (ISPRS Int. J. Geo Inf., 2014)

Assessing the Completeness of Bicycle Trail and Lane Features in OpenStreetMap for the United States. - Hartwig H. Hochmair; Dennis Zielstra; Pascal Neis (Trans. GIS, 2015)