1. 1. M. Haklay and P. Weber, “Open street map: Usergenerated street maps,” Pervasive Computing, IEEE, vol. 7, no. 4, pp. 12–18, 2008.
   2. M. Haklay, “How good is volunteered geographical information? a comparative study of Open street map and ordnance survey datasets,” Environment and Planning B: Planning and Design, vol. 37, no. 4, pp. 682–703, Aug. 2010.
   3. S. Sehra, J. Singh, and H. Rai, “A Systematic Study of Open street map Data Quality Assessment,” in 2014 11th International Conference on Information Technology: New Generations (ITNG), pp. 377– 381, Apr. 2014,.
   4. M. F. Goodchild, “Citizens as sensors: the world of volunteered geography,” GeoJournal, vol. 69, no. 4, pp. 211–221, Nov 2007.
   5. T. Hayakawa, Y. Imi, and T. Ito, “Analysis of Quality of Data in Open street map,” in 2012 IEEE 14th International Conference on Commerce and Enterprise Computing (CEC), pp. 131–134, Sep. 2012
   6. “Elements - Open street map Wiki,” accessed on 5th June 2016. [Online]. Available: http://wiki.open street map.org/wiki/Elements
   7. “Open street map Statistics,” accessed on 27th May 2016. [Online]. Available: http://www.open street map.org/stats/data stats.html
   8. “Open street map Statistics,” accessed on 27th May 2016. [Online]. Available: http://www.open street map.org/stats/data stats.html
   9. P. Neis, D. Zielstra, and A. Zipf, “The street network evolution of crowdsourced maps: Open street map in Germany 2007–2011,” Future Internet, vol. 4, no. 4, pp. 1–21, Dec 2011.
   10. O. Kounadi, “Assessing the quality of open street map data,” University College of London, Department of Civil, Environmental And Geomatic Engineering, pp. 9–21, 2009
   11. A. Coote and L. Rackham, “Neogeographic data quality is it an issue?” in the AGI Conference. ConsultingWhere Ltd, 2008.
   12. A. L. Ali and F. Schmid, “Data Quality Assurance for Volunteered Geographic Information,” in Geographic Information Science, ser. Lecture Notes in Computer Science, M. Duckham, E. Pebesma, K. Stewart, and A. U. Frank, Eds. Springer International Publishing, no. 8728, pp. 126–141, Sep. 2014.
   13. v. P. Oort, “Spatial data quality: from description to application,” Ph.D. dissertation, Wageningen University, 2006.
   14. Not at Home on the Range: Peer Production and the Urban/Rural Divide. California, USA: ACM, 2016. [Online]. Available: http://hdl.handle.net/1942/20228
   15. O. Roick, J. Hagenauer, and A. Zipf, “OSMatrixgridbased analysis and visualization of Open street map,” Proceedings of the State of the Map Europe, Vienna, Austria, vol. 1517, p. 1517, 2011.
   16. “Open street map Data Quality” accessed on 4th June 2016. [Online]. Available: http://osmlab.github.io/osmdata-quality/
   17. X. Qian, L. Di, D. Li, P. Li, L. Shi, and L. Cai, “Data cleaning approaches in Web2.0 VGI application,” in 2009 17th International Conference on Geoinformatics, pp. 1–4, Aug. 2009.
   18. R. Karam and M. Melchiori, “A crowd sourcingbased framework for im- proving geo-spatial open data,” in 2013 IEEE International Conference on Systems, Man, and Cybernetics. Institute of Electrical & Electronics Engineers (IEEE), Oct 2013.
   19. L. M. V. Blzquez, B. Villazn-Terrazas, V. Saquicela, A. d. Len, . Corcho, and A. Gmez-Prez, “GeoLinked data and inspire through an application case,” in Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems, pp. 446– 449, Jan. 2010.
   20. P. Hashemi and R. A. Abbaspour, Assessment of Logical Consistency in Open street map Based on the Spatial Similarity Concept. Springer International Publishing, 2015.
   21. F. Ying, P. Mooney, P. Corcoran, and A. Winstanley, “Polygon Processing on Open street map XML Data,” in Proceedings of the GIS Research UK 18th Annual Conference, pp. 149–154, 2010.
   22. A. Vandecasteele and R. Devillers, “Improving volunteered geographic information quality using a tag recommender system: The case of Open street map,” in Lecture Notes in Geoinformation and Cartography. Springer Science mathplus Business Media, pp. 59–80, 2015.
   23. C. Brando and B. Bucher, “Quality in user generated spatial content: A matter of specifications,” in Proceedings of the 13th AGILE international conference on geographic information science. Springer Verlag: Guimar aes, Portugal, pp. 11–14, 2010
   24. A. L. Ali, F. Schmid, R. Al-Salman, and T. Kauppinen, “Ambiguity and plausibility: managing classification quality in volunteered geographic information,” in Proceedings of the 22nd ACM SIGSPATIAL Interna- tional Conference on Advances in Geographic Information Systems. ACM, pp. 143–152, 2014.
   25. M. Helbich, C. Amelunxen, P. Neis, and A. Zipf, “Comparative spatial analysis of positional accuracy of Open street map and proprietary geodata,” Proceedings of GI Forum, 2012.
   26. B. Ciepluch, P. Mooney, and A. Winstanley, “Building generic quality indicators for Open street map,” 2011.
   27. A. Pourabdollah, J. Morley, S. Feldman, M. Jackson, and J. Campus, “Studying the Dynamic Patterns of Open street map Bugs in Great Britain,” in Proceedings of 16th AGILE International Conference on Geographic Information Science, Leuven, Belgium, vol. 1417, 2013.
   28. “Quality assurance - Open street map Wiki,” accessed on 24th May 2016. [Online]. Available: http://wiki.open street map.org/wiki/Quality assurance
   29. “Osmose - Open street map Wiki,” accessed on 26th May 2016. [Online]. Available: http://wiki.open street map.org/wiki/Osmose
   30. “OSM Inspector - Open street map Wiki,” accessed on 26th May 2016. [Online]. Available: http://wiki.open street map.org/wiki/OSM Inspector
   31. “MapRoulette - Open street map Wiki,” accessed on 27th May 2016. [Online]. Available: http://wiki.open street map.org/wiki/MapRoulette
   32. “OWL – Open street map Wiki,” accessed on 27th May 2016. [Online]. Available: ht.tp://wiki.open street map.org/wiki/OWL