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)
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)
Jayawardhana, M.N.; Dulani, K.P.K.; Muhandiramge, K.M.R.R.; Kodithuwakku, D.S.; Himanshi, H.L.N.(Social Statistics Students’ Association, Department of Economics, University of Kelaniya, 2015)