1. J. A. Benediktsson, J. A. Palmason, and J. R. Sveinsson, "Classification of hyperspectral data from urban areas based on extended morphological profiles," IEEE Trans. Geosci. Rem. Sens. 43, 480-491 (2005) 10.1109/TGRS.2004.842478
2. D. Lu and Q. Weng, "Use of impervious surface in urban land-use classification," Rem. Sens. Environ. 102, 146-160 (2006) 10.1016/j.rse.2006.02.010
3. S. Roessner, K. Segl, U. Heiden, and H. Kaufmann. "Automated differentiation of urban surfaces based on airborne hyperspectral imagery," IEEE Trans. Geosci. Rem. Sens. 39, 1525-1532 (2001) 10.1109/36.934082
4. C. Small, F. Pozzi, and C. D. Elvidge, "Spatial analysis of global urban extent from DMSP-OLS night lights," Rem. Sens. Environ. 96, 277-291 (2005) 10.1016/j.rse.2005.02.002
5. United Nations, World Urbanization Prospects - The 2005 Revision. Executive summary, United Nations Population Division, New York (2006).