1. Arbeitsgemeinschaft der Vermessungsverwaltungen der Länder der Bundesrepublik Deutschland [AdV], Documentation on the Modelling of Geoinformation of Official Surveying and Mapping in Germany (GeoInfoDoc), version 6.0.1 ( 2009) Available at http://www.adv-online.de/icc/extdeu/binarywriterservlet?imgUid=8f830072-8de8-9221-d5ad-8f138a438ad1&uBasVariant=11111111-1111-1111-1111-111111111111
2. A. Ather, '“A Quality Analysis of OpenStreetMap Data”' MEng thesis (2009)
3. “A Simple Positional Accuracy Measure for Linear Features”;M.F. Goodchild;International Journal of Geographical Information Science
4. M. Haklay, '“How Good Is OpenStreetMap Information? A Comparative Study of OpenStreetMap and Ordnance Survey Datasets for London and the Rest of England”' ( 2008) Unpublished draft, available at http://www.ucl.ac.uk/~ucfamha/OSM%20data%20analysis%20070808_web.pdf
5. “Area Collapse and Road Centerlines Based on Straight Skeletons”;J.-H. Haunert;GeoInformatica