NGUYEN, T.-L. ., M.-H. . SHU, and B.-M. . HSU. “Forecasting International Tourism Demand- An Empirical Case in Taiwan”. Asian Journal of Empirical Research, vol. 3, no. 6, June 2013, pp. 711-24, https://archive.aessweb.com/index.php/5004/article/view/3470.