Tasnee Attanandana, Piya Duangpatra, and Tawachai Na Nagara. 1991. “Efficiency of Acryhope in Enhancing Drought Tolerance of Crops”. Agriculture and Natural Resources 25 (4). Bangkok, Thailand:407-13. https://li01.tci-thaijo.org/index.php/anres/article/view/241992.