Arambewela, L.S.R.Ranatunga, J.Wijeratne, S.Fernando, P.Wickramasinghe, K.2010-07-062010-07-061993Journal of the National Science Council of Sri Lanka, 21(1):p.63-71https://dl.nsf.gov.lk/handle/1/6677HormonesAgricultureOptimising alkaloid yield in Catharanthus roseusArticle