Zeng, Peng, Ying-Hong Xu, and Ming-Fei Li. “Catalytic Reductive Depolymerization of Corncob Lignin to Produce Bio-Oil via Formic Acid Ethanol System”. BioResources 18, no. 1 (January 30, 2023): 2083–2099. Accessed December 22, 2025. https://ojs.bioresources.com/index.php/BRJ/article/view/22246.