Aravindh N, Raja S, Rajasimman M, and Vijayakumar B. “Synthesis and Characterization of Heterogeneous Nano-Catalyst for the Production of Biodiesel from Pongamia Pinnata Oil”. Science & Technology Asia, vol. 30, no. 4, Dec. 2025, pp. 347-56, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/256033.