Samarakkody, G.S.; Jayathilake, Y.M.C.D.; Bandaranayake, C.M.; Weerasinghe, W.A.D.S.S.; Perera, G.A.K.S.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)
Samarakkody, G.S.; Kumarayapa, Y.A.A.; Wijesinghe, K.; Gunasekara, M.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)