Sarutayophat, T., Imwichit, S., Sripichitt, A., Phimsirikul, P., Thabthimtho, T., and Promsomboon, P. 2020. “Drought-tolerant characters, yield and its component of an elite landrace upland rice cultivars in Thailand”. International Journal of Agricultural Technology 16 (4):985-44. https://li04.tci-thaijo.org/index.php/IJAT/article/view/7248.