Parichatnon1, S., K. . Maichum, and A. . Wongchai. “Revealed Comparative Advantage of Rubber Exports Between Thailand, Indonesia and Malaysia”. Business Review Journal, vol. 12, no. 2, Dec. 2020, pp. 113-26, https://so01.tci-thaijo.org/index.php/bahcuojs/article/view/151695.