Rathnathilaka, R.M.M.B.; Dissanayake, D.K.S.M.A.; de Silva, A.K.M.; Kamalawarna, R.S.S.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Weerasinghe, M.W.A.S.M.; Senavirathne, K.B.R.; Sandaruwan, G.H.A.L.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Gunasekara, K.D.H.U.; Sandamali, M.A.D.N.; Fernando, K.D.A.K.; Padmasika, P.A.T.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Gunasekara, K.D.H.U.; Sandamali, M.A.D.N.; Fernando, K.D.A.K.; Padmasika, P.A.T.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Kodituwakku, D.S.; Dulani, K.P.K.; Jayawardena, M.N.; Muhandiramge, K.M.R.R.; Maduwanthi, G.H.H.S.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Hettiarachchi, H.A.S.S.; Dissanayake, A.A.P.; Niroshan, D.M.M.; Damayanthi, M.K.N.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Kahatapitiya, K.P.K.D.; Kodituwakku, D.S.; Jayawardhana, M.N.; Muhandiramge, K.M.R.R.; Gunawardhana, K.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)