“…Following on earlier studies, discussions and applications, the relevancy of elements of the original concept of differential urbanisation was subsequently positively tested at different levels of spatial aggregation in a number of countries differing from one another in terms of their level of development from developed to emerging economic settings (Bonifazi and Heins, 2003;Champion, 2003;Gedik, 2003;Geyer, 2003;Heikkilä, 2003;Kontuly and Dearden, 2003;Mookherjee, 2003;and Tammaru, 2003). Several other discussions and studies followed, which, together, elevated the concept from model to theory status (Abe, 2005;Campuzano, 2006;Champion, 2008;Dangschat and Giffinger, 2008;Gwebu, 2006;Kontuly and Tammaru, 2006;Mitchell, 2004;Mookherjee and Geyer, 2011;Ouředníček, 2007;Suárez and Delgado, 2006;Tammaru et al, 2004).…”