1. United Nations, World urbanization prospects: the 2007 revision (United Nations, New York, 2007)
2. H. Van Ginkel, Urban future. The cities of the developing world are spectacularly ill-prepared for the explosion in urban living. Nature 456, 32–33 (2008)
3. L.F. Girard, M. Cerreta, P. de Toro, F. Forte, The human sustainable city: values, approaches and evaluative tools, in Sustainable urban development 2: the environmental assessment methods, ed. by M. Deakin, G. Mitchell, P. Nijkamp, R. Vreeker (Routledge, London, 2007), pp. 65–93
4. R.B. Bhagat, Emerging pattern of urbanization in India. Econ. Polit. Wkly. 46, 10–13 (2011)
5. B. Bhatta, S. Saraswati, D. Bandyopadhyay, Quantifying the degree-of-freedom, degree-of-sprawl, and degree-of-goodness of urban growth from remote sensing data. Appl. Geogr. 30, 96–111 (2010)