P.A.A.C., P., J. D.D.M., and C. N.V. “Modeling and Forecasting Sri Lankan Gold Prices”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 27, no. 3, June 2016, pp. 247-60, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5802.