“Lignin-Derived Sustainable Polymers and Tribological Performance in Additive Manufacturing: Towards High-Performance Bio-Based Composite Materials”. International Research Journal of Advanced Engineering and Technology 2, no. 02 (February 24, 2025): 07–14. Accessed December 27, 2025. https://aimjournals.com/index.php/irjaet/article/view/377.