1. Misra HN, Mishra A (2017) Role of small and intermediate towns in regional development: a case study of Raebareli, Sultanpur and Pratapgarh Districts of Uttar Pradesh, India. Environ Socio-economic Stud 12 5(4)
2. Hagerstrand T (1968) Innovation diffusion as a spatial process. University of Chicago Press, Chicago, USA
3. Perroux F (1955) Regional development planning in India –A new strategy. Vikas, New Delhi
4. Myrdal G (1957) Rich lands and poor. Harper and Row, New York
5. Hirschman AO (1958) The strategy of economic development. Yale University Press, New Heaven, Connecticut, USA