Homdee, Tipaporn, Kobkiat Pongput, and Shinjiro Kanae. 2016. “A comparative performance analysis of three standardized climatic drought indices in the Chi River basin, Thailand”. Agriculture and Natural Resources 50 (3). Bangkok, Thailand:211-19. https://li01.tci-thaijo.org/index.php/anres/article/view/243909.