Dharmaratne, H.R.W.Nanayakkara, N.P.D.Khan, I.A.2015-11-202015-11-202002Phytochemistry, 59:p.429-433https://dl-ifs.nsf.gov.lk/handle/1/829Kavalactones from Piper methysticum, and their 13C NMR spectroscopic analysesArticle