Samarakkody, G.S.; Kumarayapa, Y.A.A.; Wijesinghe, K.; Gunasekara, M.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)
Prasanga, K.S.; Fernando, C.A.N.; Cooray, M.T.J.; Liyanaarachchi, U.S.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)