1. International Center for Multidisciplinary Studies, Faculty of Humanities and Social Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
2. International Center for Multidisciplinary Studies, Department of Social Statistics, Faculty of Humanities and Social Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
3. Department of Economics, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
4. Department of History and Archelogy, University of Sri Jayewardenepura, Nugegoda, Sri Lanka