Sangnak, Sirawit, Arthit Neramittagapong, Sutasinee Neramittagapong, Somnuk Theerakulpisut, and Pongsert Sriprom. “Optimization of Vanillin Production from Lignin Using Catalytic Depolymerization over a CuO/Al2O3 Catalyst”. Applied Environmental Research 45, no. 1 (March 29, 2023). Accessed May 20, 2024. https://ph01.tci-thaijo.org/index.php/aer/article/view/251061.