1995-2000 Rural-Urban migration and urban informal sectors in developing countries
1996- Urban informal sectors and economic development in developing countries
2000- People's process, enhancing the space of the poor, and alternative development
2009-Globalization,Poverty and Inequality
2011-Urban Redevelopment and exclusion (gentrification)
(Subject of research)
Economics of Informal sector
People' process, enhancing the space of the poor, and alternative development