Wijerathna, M.M.M.B.; Jayasinghe, J.M.J.W.; Silva, A.S.A.; Weerathunga, B.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)
Samarasekara, D.T.M.W.; Weerasinghe, W.A.D.S.S.; Jayathilaka, Y.M.C.D.; Vidanapathirana, K.P.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2015)