Jayasinghe, U.L.B.Nadeem, M.Raiiman, A.U.R.Choudhary, M.I.Ratnayake, H.D.Amtul, Z.2015-09-032015-09-031998Natural Product Letters, 12(2):p.103-109https://dl-ifs.nsf.gov.lk/handle/1/631Article