Saenboonruang, Kiadtisak, and Nilanga Liyanage. “Q2 Measurement and Challenges in PREX”. Agriculture and Natural Resources 49, no. 2 (April 30, 2015): 277–287. accessed September 17, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/243570.