Nakhalin Phounsavath, Vannasinh Souvannasouk, Khamphisay Khammingsavath, Phoutsavath Phanthavong, Chantiem Silalai, Bualaphanh Mingkhuan, Odeth Sihavong, and Salongxay Fongsamouth. “Circular bioeconomy valorization of coffee bark residues: Soil chemical transformation and yield enhancement in highland arabica coffee systems”. Maejo International Journal of Energy and Environmental Communication 7, no. 2 (June 15, 2025): 19–26. accessed September 3, 2026. https://ph02.tci-thaijo.org/index.php/MIJEEC/article/view/261857.