Punyasiri, P.A.N.Amarakoon, A.M.T.Somasiri, H.P.P.S.Thotawattage, G.Abeysinghe, I.S.B.2016-05-022016-05-022011International Symposium on Natural Products and their Applications in Health and Agriculture 2011:p.50https://dl-ifs.nsf.gov.lk/handle/1/1167High performance liquid chromatography of L-Theanine content in Sri Lankan teaConference paper