J. Otterbacher. CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, page 955--964. New York, NY, USA, ACM, (2009)
M. Sester, L. Harrie, and A. Stein. ISPRS Journal of Photogrammetry and Remote Sensing, 66 (2):
155 - 156(2011)<ce:title>Quality, Scale and Analysis Aspects of Urban City Models</ce:title>.
A. Halfaker, A. Kittur, R. Kraut, and J. Riedl. Proceedings of the 5th International Symposium on Wikis and Open Collaboration, page 15:1--15:10. New York, NY, USA, ACM, (2009)
S. Moosavi, {. Seyyedi, and N. Moghadam. Information Technology: New Generations, 2009. ITNG '09. Sixth International Conference on, page 290--295. (April 2009)