Punyawardena, B.V.R.Cherry, N.J.2010-07-062010-07-061999Journal of the National Science Foundation of Sri Lanka, 27(3):p.187-195https://dl.nsf.gov.lk/handle/1/6442El-Nino effectLa-Nina effectBinomial analysisStatistical analysisClimatologyAssessment of the predictability of seasonal rainfall in Ratnapura using the southern oscillation and its two extremesArticle