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)
Muhandiramge, K.M.R.R.; Jayawardhana, M.N.; Dulani, K.P.K.; Kodithuwakku, D.S.; Kiriella, P.M.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)
Madushani, H.D.P.; Nayomi, H.V.P.M.; Dasanayake, D.M.H.; Perera, L.G.D.(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)